In a world where humans and advanced artificial intelligence coexist, a catastrophic future looms on the horizon. To prevent the impending doom, a scientist takes a drastic gamble by sending a relic from the past back in time. Vivy, a pioneering autonomous AI, is a talented songstress programmed to spread joy through her melodious voice. Stuck in a theme park, she performs day in and day out, yearning for a true connection with her audience. However, her routine is disrupted by an enigmatic AI from the future, who enlists Vivy's help to alter the course of history. With the weight of this revelation settling in, Vivy embarks on a perilous journey spanning a century, racing against time to prevent a devastating war that will soon ravage the world.
Spring 2021 Anime
15 anime premiering April – June 2021. Sorted by broadcast date with streaming guides, trailers, and scores — everything you need to plan your season.
Premieres by month
Every series sorted by broadcast date.
April 2021
13 premieresIn the midst of a crushing rejection from his long-time crush Airi Gotou, salaryman Yoshida's evening takes a dramatic turn when he stumbles back to his tiny apartment, only to find an unexpected new roommate - 16-year-old runaway Sayu Ogiwara. The previous night's revelry with friend Hashimoto has left Yoshida with a hazy memory, but the reality of his new living situation is undeniable. As Sayu recounts her story of fleeing Hokkaido, Yoshida finds himself drawn to her plight and ultimately decides to take her in, despite his initial reservations about harboring an underage girl. With Sayu's presence, Yoshida's life takes a drastic turn, forcing him to confront his own emotions and re-evaluate his priorities.
In a world where ancient promises bind the members of the Souma family, a centuries-old curse has taken hold. Akito, the clan's leader, believes he shares a special connection with his relatives, but in reality, his grasp on reality is tenuous at best. As a result, the family remains trapped in a cycle of fear and isolation, unable to break free from the shackles of their supposed "eternal" bond. Enter Tooru Honda, a kind-hearted and determined young woman who has grown close to the Soumas. She's convinced that there's more to life than the curse that's suffocating the family, and she's determined to help them find freedom. But as she delves deeper into the mysteries of the Souma's past, she begins to realize that the truth is far more complicated than she ever could have imagined. As the clock ticks away, Tooru finds herself torn between her desire to lift the curse and the uncertainty of the future that lies ahead. Will she be able to find a way to break the cycle of suffering that has plagued the Souma family for so long, or will she become another casualty of their eternal bond?
Odd Taxi
Apr 6
In a small town, a peculiar individual named Hiroshi Odokawa navigates his daily routine as a taxi driver. His straightforward nature and eccentricities make him a magnet for an eclectic group of passengers, including the aimless Taichi Kabasawa, the enigmatic nurse Miho Shirakawa, the struggling comedy duo Homo Sapiens, and Dobu, a notorious delinquent. However, Odokawa's ordinary life takes an unexpected turn when the police investigation into a missing girl's disappearance suddenly centers around him. As the yakuza and a pair of corrupt cops close in, Odokawa finds himself entangled in a complex web of secrets and lies.

Ten Thousand Worlds
Apr 6
In a world where martial arts reign supreme, Lin Feng's life takes a devastating turn when his fiancée, Ji Manyao, steals his condensed martial soul, leaving him mortally wounded. As his spirit flees his body, Lin Feng finds himself in a mystical realm where a mysterious woman offers him a dark bargain: destroy ancient gods buried beneath the earth and gain unfathomable martial prowess and knowledge. In the real world, Lin Feng's reputation as the eldest young master of the Lin family is in tatters, his servants no longer acknowledging his authority after he loses his sword spirit. Seeking redemption, Lin Feng returns to the world of the living and employs the newfound power to defeat Lin Yuhong, a formidable warrior from the Huangjie Wuhun clan. The Lin family's perception of Lin Feng shifts dramatically, but his struggles with his new abilities soon lead to a tragic confrontation with Qin Xiao, a favored grandson of the Qin family's first elder. Despite his best efforts, Lin Feng is unable to control his power, resulting in Qin Xiao's demise. The elders of the Qin family are left seething with anger, setting the stage for a complex web of alliances and rivalries to unfold.
In a stunning twist of fate, the notorious Demon King Diablo finds himself mistaken for the divine presence by the High Priestess Lumachina Weselia. As Diablo's party, including Rem, Shera, and others, accompanies Lumachina on her perilous quest to root out corruption within the Church, the Demon Lord's true intentions are put to the test. With his growing bond with Lumachina, Diablo must decide whether to protect her and fulfill her wishes, or continue to play the role of God, a part he's not entirely sure he's suited for.
In a world where role-playing games dictate the norms of combat, slimes are often the most trivial foes to vanquish. But what if one were to defy the conventional wisdom and make a career out of slaughtering these lowly creatures? Azusa Aizawa, a former corporate drone, thought she'd found her answer in immortality, bestowed upon her by a benevolent goddess after a life of exhaustion. In this new world, she spends her days farming, protecting the local village, and dispatching slimes with ease – a routine that's remained unchanged for centuries. However, Azusa's unassuming existence is disrupted when she discovers she's reached the pinnacle of power – level 99 – solely through her slime-slaying exploits. Fearing the consequences of her newfound strength, she attempts to keep her abilities under wraps, but whispers of her prowess soon spread, drawing attention from an array of characters, including the enigmatic dragon Laika and the cunning elf Halkara. As these strangers arrive at her doorstep, seeking battle or assistance, Azusa finds herself forging unexpected bonds and discovering that a life shared with others is far more fulfilling than her solitary existence. As Azusa navigates this new world of friendships and alliances, she must confront the reality that her life of quiet contentment has been turned upside down. But with her newfound companions by her side, she begins to realize that there's more to life than simply maxing out her level – there's a world of adventure, camaraderie, and purpose waiting to be explored.
86 Eighty-Six
Apr 11
In a world where the Republic of San Magnolia wages war against the Giadian Empire, a sinister truth lurks beneath the surface. The Republic's propaganda machine touts a casualty-free conflict, but the reality is far more brutal. Those deemed "different" by the ruling elite are relegated to the Eighty-Six, a secret faction forced to fight for the Empire's autonomous Legion under the command of the Republican "Handlers." Vladilena Milizé, a passionate advocate for the Eighty-Six, takes on a new role as Handler for the elite Spearhead squadron. Shunned by her peers for her beliefs, she continues to fight against the discrimination and oppression faced by her people. At the helm of the Spearhead squadron is Shinei Nouzen, a battle-hardened captain haunted by the memories of his fallen comrades. As the fates of these two groups from different worlds converge, the stage is set for a clash of ideologies and a quest for redemption. Will the spark of hope ignite a path to salvation for the Eighty-Six, or will the flames of despair consume them? As the war rages on, Vladilena and Shinei must navigate the treacherous landscape of politics and morality, confronting the harsh realities of their world and the true cost of their conflict.
Tokyo Revengers
Apr 11
In the midst of a life that's lost its luster, Takemichi Hanagaki is struck by a sudden and crushing blow: a news report revealing the brutal murder of his former girlfriend, Hinata Tachibana, and her brother at the hands of the notorious Tokyo Manji Gang. As he's about to meet his maker, Takemichi's mind flashes back to the happier times of his adolescence, when he was the king of his middle school social circle. But fate has a way of rewinding the clock, and Takemichi finds himself reliving that fateful day from 12 years ago. This time, he meets Hinata's younger brother, and in a moment of unbridled emotion, he shares his impending demise with the young boy. The past and present collide as Takemichi returns to the future, only to discover that his actions have altered the course of events. With the power to manipulate time now at his disposal, Takemichi sets out to prevent Hinata's tragic demise and alter the trajectory of his own life.
In a chance encounter at the school library, Naoto Hachiouji's life takes an unexpected turn when he crosses paths with Hayase Nagatoro, a mischievous first-year student. Nagatoro's peculiar fascination with Naoto's awkward nature prompts her to adopt a playful, yet dominating, demeanor towards him, earning him the nickname "Senpai". Initially, Naoto is subjected to a constant barrage of teasing, leaving him feeling mortified and forced to accommodate Nagatoro's whims. However, as they spend more time together, a peculiar bond forms, and Naoto discovers that life with Nagatoro can be surprisingly enjoyable. With Nagatoro's antics now a staple of his daily routine, Naoto's life becomes a thrilling adventure, filled with unpredictable moments and an unbreakable connection with his eccentric tormentor.
To Your Eternity
Apr 12
In a distant, ethereal realm, a mysterious entity known as It is dispatched to Earth, where it begins to adapt to its new surroundings by assuming the forms of beings whose reflections it captures. Initially, it takes on the guise of a rock and then, as temperatures rise, morphs into a tender sprout of moss. It remains dormant until a dying wolf crosses its path on a snowy day, and in a sudden burst of consciousness, It assumes the wolf's form, embarking on a journey with no clear destination in mind. It's path soon intersects with that of a young boy, who has been waiting for his tribe's return from a fabled paradise teeming with fish and fruit. The boy's loneliness is palpable, but he holds onto the hope that those dear to him have not forgotten him and that he will one day be reunited with them. As he sets out to explore new lands, accompanied by It, he becomes increasingly disillusioned with the lack of signs from his tribe and the severity of his own physical condition. As It continues to evolve and adapt, it finds itself drawn to the human experience, encountering a diverse array of individuals throughout time. This poignant tale of an immortal being's journey explores the complexities of humanity, friendship, and the search for belonging.

Perfect World
Apr 23
In a realm where village politics and power struggles reign supreme, a young prodigy named Shi Hao is born with an extraordinary gift, destined to rise above his humble beginnings. As a member of a clan shrouded in mystery, Shi Hao's family dedicates themselves to nurturing his exceptional abilities, guiding him through treacherous landscapes and fierce battles against malevolent monsters. With each triumph, Shi Hao's strength and ambition grow, driving him to traverse uncharted territories and forge a path that will eventually shake the very foundations of his world.

Link Click
Apr 30
In a small, enigmatic photo studio, two friends, Cheng Xiaoshi and Lu Guang, possess a unique gift - the ability to physically enter photographs. As their clients bring in treasured snapshots, the duo uses their extraordinary powers to delve into the captured moments, unraveling the secrets hidden within. By assuming the perspective of the photographer, they relive the events surrounding the image, striving to decipher the mysteries and fulfill the client's desires. However, this extraordinary ability comes with a profound risk. Every misstep can have far-reaching consequences, altering the future of the photographer and potentially reshaping the course of countless lives. As they become increasingly entangled in the stories they're asked to unravel, the lines between their own emotions and the events they're trying to alter begin to blur. It's a delicate balancing act, requiring unwavering focus and self-control to accomplish their mission without succumbing to the weight of their own feelings.
June 2021
2 premieres
The Island of Siliang
Jun 14
On a mystical island shrouded in legend, a fiery young woman named Linna refuses to be bound by her restrictive upbringing. With an unyielding passion for martial arts, she sets her sights on mastering the ancient techniques that have been passed down through her family. As she delves deeper into the world of combat, Linna finds herself entangled in a complex web of emotions, torn between her loyalty to her loved ones and her growing feelings for a brooding stranger. With her determination and spirit put to the test, Linna must confront the dark secrets of her island home and the true nature of her own destiny.
Record of Ragnarok
Jun 17
In a gathering of the world's gods, a unanimous decision is made to eradicate humanity due to its inherent selfishness. However, one of the 13 Valkyries, Brunhilde, intervenes, determined to give humanity a chance to prove its worth. She proposes an unprecedented event, Ragnarök, where the strongest 13 mortal warriors will face off against the 13 gods in one-on-one battles. The gods, fueled by pride, reluctantly agree to Brunhilde's proposal. But to succeed, she must scour the annals of human history to recruit the greatest heroes and guide them to victory, all while knowing that their ultimate fate is already sealed. As the stage is set for this epic showdown, humanity's fate hangs in the balance, and the gods' decision to destroy them may yet be reversed.
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See Best VPNs for AnimeAbout Spring 2021 Anime
Spring 2021 Anime covers every series premiering between April – June 2021. AnimeVault tracks 15 confirmed premieres for this cours, with 12 available on ad-supported free tiers. New schedules are confirmed 2–4 weeks before each season starts; we refresh this page weekly.
Sort options live in your hand: jump to the highest-rated premieres above, scan by month below, or pop into any series for the full streaming guide. Region-locked? Our anime VPN guide covers every option for unblocking Crunchyroll, ABEMA, Netflix Japan, and more.
Frequently Asked Questions
15 anime premiered during April – June 2021, including both Japanese anime and donghua (Chinese animation). AnimeVault tracks every premiere with streaming guides, scores, and trailers.
Spring 2021 runs from April – June 2021. Most series debut within the first two weeks of spring (early April), with 11–13 episode cours wrapping by the end of the season.
Many Spring 2021 titles stream free with ads on Crunchyroll's ad-supported tier, YouTube official anime channels, Tubi, and Bilibili. Each anime page on AnimeVault lists every legal streaming option by region.
Anime industry seasons mirror Japan's broadcast schedule: Winter (Jan–Mar), Spring (Apr–Jun), Summer (Jul–Sep), Fall (Oct–Dec). New cours debut in the first 1–2 weeks of each quarter, which is why "Spring 2026 anime" means series premiering April through June 2026.
Visit the AnimeVault release calendar to see every series currently airing across all platforms. Bookmark this page — the schedule updates as new premieres are confirmed, and you can browse neighbouring seasons (2021-winter) and (2021-summer).
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