Summer 2026 anime is shaping up to be one of the most exciting seasons for fans of fantasy, isekai, action, romance, and long-running sequels. The lineup includes major returning titles like Mushoku Tensei: Jobless Reincarnation Season 3, BLEACH: Thousand-Year Blood War – The Calamity –, Re:ZERO -Starting Life in Another World- Season 4, and That Time I Got Reincarnated as a Slime Season 4.
This list highlights the top 15 Summer 2026 anime to add to your watchlist, including premiere dates, studios, official websites, YouTube trailers, official X accounts, and anime poster images.
Note: Some titles below began in Spring 2026 and continue into Summer 2026 because the seasonal source list includes ongoing anime.
Quick List: Top 15 Summer 2026 Anime
- That Time I Got Reincarnated as a Slime Season 4
- Mushoku Tensei: Jobless Reincarnation Season 3
- Re:ZERO -Starting Life in Another World- Season 4
- Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs Season 2
- Daemons of the Shadow Realm
- Welcome to Demon School! Iruma-kun Season 4
- Saga of Tanya the Evil II
- Skeleton Knight in Another World 2
- Ascendance of a Bookworm: Adopted Daughter of an Archduke
- BLEACH: Thousand-Year Blood War – The Calamity –
- From Old Country Bumpkin to Master Swordsman II
- The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3
- Clevatess II
- The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy
- The Exiled Heavy Knight Knows How to Game the System
That Time I Got Reincarnated as a Slime Season 4
English Title: That Time I Got Reincarnated as a Slime Season 4
Original / Romaji Title: Tensei Shitara Slime Datta Ken 4th Season
Japanese Title: 転生したらスライムだった件 第4期
Premiere Date: Began Spring 2026; continuing into Summer 2026
Studio: eightbit
Official Website: ten-sura.com
Official Trailer: Official Trailer
Official X: @ten_sura_anime
Demon Lord Rimuru continues working toward his dream of building a peaceful alliance between humans and monsters. As Tempest grows stronger, new enemies, political power struggles, and larger ambitions begin to shape the next phase of the story. This remains one of the biggest fantasy and isekai anime airing in Summer 2026.
Mushoku Tensei: Jobless Reincarnation Season 3
English Title: Mushoku Tensei: Jobless Reincarnation Season 3
Original / Romaji Title: Mushoku Tensei III: Isekai Ittara Honki Dasu
Japanese Title: 無職転生Ⅲ ～異世界行ったら本気だす～
Premiere Date: July 5, 2026
Studio: Studio Bind
Official Website: mushokutensei.jp
Official Trailer: Official Trailer
Official X: @mushokutensei_A
Mushoku Tensei returns for its third season, continuing Rudeus Greyrat’s journey through a fantasy world filled with magic, emotional growth, and difficult personal choices. With Studio Bind back on the production side, this is one of the most anticipated Summer 2026 anime for isekai fans.
Re:ZERO -Starting Life in Another World- Season 4
English Title: Re:ZERO -Starting Life in Another World- Season 4
Original / Romaji Title: Re:Zero kara Hajimeru Isekai Seikatsu 4th Season
Japanese Title: Re：ゼロから始める異世界生活 4th Season
Premiere Date: Began Spring 2026; continuing into Summer 2026
Studio: WHITE FOX
Official Website: re-zero-anime.jp
Official Trailer: Official Trailer
Official X: @Rezero_official
After the brutal battle in Pristella, Subaru and his companions are left carrying enormous consequences. With Rem still trapped, Crusch lacking her memories, and Julius robbed of his name, the group heads toward the Pleiades Watchtower in search of answers. Re:ZERO Season 4 remains one of the strongest dark fantasy anime of the year.
Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs Season 2
English Title: Trapped in a Dating Sim: The World of Otome Games is Tough for Mobs Season 2
Original / Romaji Title: Otome Game Sekai wa Mob ni Kibishii Sekai desu 2
Japanese Title: 乙女ゲー世界はモブに厳しい世界です2
Premiere Date: July 2026
Studio: ENGI
Official Website: mobseka.com
Official Trailer: Official Trailer
Official X: @mobseka_anime
Leon returns to the chaotic otome-game world where side characters are treated terribly and survival depends on outsmarting a rigged social system. Season 2 should bring more comedy, political maneuvering, mech action, and romantic chaos, making it an easy recommendation for Summer 2026 isekai fans.
Daemons of the Shadow Realm
English Title: Daemons of the Shadow Realm
Original / Romaji Title: Yomi no Tsugai
Japanese Title: 黄泉のツガイ
Premiere Date: Began Spring 2026; continuing into Summer 2026
Studio: bones film
Official Website: yominotsugai.com
Official Trailer: Official Trailer
Official X: @tsugai_official
In a world where certain humans command supernatural pairs called Daemons, twins Yuru and Asa are bound by destiny and birthright. Separated early in life, they must fight through dangerous conspiracies and hidden truths to reunite and claim their place in the world.
Welcome to Demon School! Iruma-kun Season 4
English Title: Welcome to Demon School! Iruma-kun Season 4
Original / Romaji Title: Mairimashita! Iruma-kun 4th Season
Japanese Title: 魔入りました！入間くん 第４シリーズ
Premiere Date: Began Spring 2026; continuing into Summer 2026
Studio: Bandai Namco Pictures
Official Website: nhk-character.com/chara/iruma
Official Trailer: Official Trailer
Official X: @nep_irumakun
Iruma continues his life at Demon School Babyls while hiding that he is human. With the Music Festival arc putting friendships, performance skills, and teamwork to the test, Season 4 offers more comedy, heart, and school-life fantasy fun.
Saga of Tanya the Evil II
English Title: Saga of Tanya the Evil II
Original / Romaji Title: Youjo Senki II
Japanese Title: 幼女戦記Ⅱ
Premiere Date: July 2026
Studio: NUT
Official Website: youjo-senki.jp
Official Trailer: Official Trailer
Official X: @youjosenki
Tanya Degurechaff returns for another season of ruthless military strategy, aerial warfare, and brutal battlefield politics. If you enjoy war anime with sharp tactical writing and an unforgettable antihero, Saga of Tanya the Evil II is one of the standout Summer 2026 sequels.
Skeleton Knight in Another World 2
English Title: Skeleton Knight in Another World 2
Original / Romaji Title: Gaikotsu Kishi-sama, Tadaima Isekai e Odekakechuu II
Japanese Title: 骸骨騎士様、只今異世界へお出掛け中Ⅱ
Premiere Date: July 2026
Studio: Aura Studio
Official Website: skeleton-knight.com
Official Trailer: Official Trailer
Official X: @gaikotsukishi02
Arc is back for more fantasy adventure, combining overpowered action, comedy, and lighthearted isekai fun. The second season should continue his travels with his allies while expanding the world and conflict around him.
Ascendance of a Bookworm: Adopted Daughter of an Archduke
English Title: Ascendance of a Bookworm: Adopted Daughter of an Archduke
Original / Romaji Title: Honzuki no Gekokujou: Shisho ni Naru Tame ni wa Shudan wo Erandeiraremasen – Ryushu no Youjo
Japanese Title: 本好きの下剋上〜司書になるためには手段を選んでられません〜 領主の養女
Premiere Date: Began Spring 2026; continuing into Summer 2026
Studio: WIT STUDIO
Official Website: booklove-anime.jp
Official Trailer: Official Trailer
Official X: @anime_booklove
Myne’s story enters a new phase as she takes on life as Rozemyne, the adopted daughter of an archduke. Still determined to create books in a world where they are scarce, she must navigate noble society, dangerous mana-related conspiracies, and the responsibilities of her new identity.
BLEACH: Thousand-Year Blood War – The Calamity –
English Title: BLEACH: Thousand-Year Blood War – The Calamity –
Original / Romaji Title: BLEACH: Sennen Kessen-hen – Kashin-tan –
Japanese Title: BLEACH 千年血戦篇-相剋譚-
Premiere Date: July 2026
Studio: PIERROT FILMS
Official Website: bleach-anime.com
Official Trailer: Official Trailer
Official X: @BLEACHanimation
The final phase of BLEACH: Thousand-Year Blood War raises the stakes even further as the balance of the worlds begins to collapse. Ichigo, Yhwach, Squad Zero, and the rest of the cast are pushed toward a massive confrontation.
From Old Country Bumpkin to Master Swordsman II
English Title: From Old Country Bumpkin to Master Swordsman II
Original / Romaji Title: Katainaka no Ossan, Kensei ni Naru II
Japanese Title: 片田舎のおっさん、剣聖になるII
Premiere Date: July 8, 2026
Studio: Passione, Hayabusa Film
Official Website: ossan-kensei.com
Official Trailer: Official Trailer
Official X: @ossan_kensei
This fantasy action sequel continues the story of a humble middle-aged swordsman whose true talent earns him recognition far beyond his quiet origins. Season 2 should deliver more swordplay, mentor energy, and classic fantasy progression.
The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3
English Title: The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3
Original / Romaji Title: Kimi no Koto ga Daidaidaidaidaisuki na 100-nin no Kanojo 3rd Season
Japanese Title: 君のことが大大大大大好きな100人の彼女 第3期
Premiere Date: July 5, 2026
Studio: Bibury Animation Studios
Official Website: hyakkano.com
Official Trailer: Official Trailer
Official X: @hyakkano_anime
Rentaro’s absurd romantic destiny continues, bringing even more girlfriends, comedy, chaos, and over-the-top affection. If you love self-aware rom-coms that fully embrace their wild premise, Season 3 should be one of the most entertaining comedy anime of Summer 2026.
Clevatess II
English Title: Clevatess II
Original / Romaji Title: Clevatess II -Majuu no Ou to Akago to Shikabane no Yuusha Denshou-
Japanese Title: クレバテスⅡ-魔獣の王と偽りの勇者伝承-
Premiere Date: July 2026
Studio: Lay-duce
Official Website: clevatess.com
Official Trailer: Official Trailer
Official X: @clevatess_anime
Clevatess II continues the dark fantasy tale built around the beast king, false hero legends, and a dangerous world full of conflict and mystery. The series stands out as one of Summer 2026’s darker fantasy options.
The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy
English Title: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy
Original / Romaji Title: Tenkou-saki no Seiso Karen na Bishoujo ga, Mukashi Danshi to Omotte Issho ni Asonda Osananajimi Datta Ken
Japanese Title: 転校先の清楚可憐な美少女が、昔男子と思って一緒に遊んだ幼馴染だった件
Premiere Date: July 2026
Studio: project No.9
Official Website: tenbin-anime.asmik-ace.co.jp
Official Trailer: Official Trailer
Official X: @tenbin_anime
When Haruki transfers to a new school, he realizes that the elegant beauty in his class is actually his childhood friend—the same one he used to think was a boy. Publicly she is the unreachable flower of the class, but privately she still acts like the old friend he remembers.
The Exiled Heavy Knight Knows How to Game the System
English Title: The Exiled Heavy Knight Knows How to Game the System
Original / Romaji Title: Tsuihou sareta Tensei Juukishi wa Game Chishiki de Musou suru
Japanese Title: 追放された転生重騎士はゲーム知識で無双する
Premiere Date: July 2, 2026
Studio: GoHands
Official Website: sh-anime.shochiku.co.jp/jukishi-anime
Official Trailer: Official Trailer
Official X: @jukishi_anime
After being exiled for drawing the supposedly weak Heavy Knight class during a divine blessing ritual, Elymas uses his game knowledge to prove that the class is far stronger than anyone thinks. With two cours back-to-back, this fantasy action series could become one of the sleeper hits of Summer 2026.
Best Summer 2026 Anime by Genre
- Best Isekai Anime: Mushoku Tensei: Jobless Reincarnation Season 3
- Best Fantasy Anime: Re:ZERO -Starting Life in Another World- Season 4
- Best Action Anime: BLEACH: Thousand-Year Blood War – The Calamity –
- Best Comedy Anime: The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3
- Best Romance Anime: The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy
- Best Dark Fantasy Anime: Clevatess II
- Best Continuing Anime: That Time I Got Reincarnated as a Slime Season 4
Final Thoughts on the Best Summer 2026 Anime
If you are building your Summer 2026 anime watchlist, the easiest must-watch recommendations are Mushoku Tensei: Jobless Reincarnation Season 3, BLEACH: Thousand-Year Blood War – The Calamity –, Re:ZERO Season 4, That Time I Got Reincarnated as a Slime Season 4, and Daemons of the Shadow Realm.
Romance fans should keep an eye on The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy, while fantasy fans have plenty to watch with Ascendance of a Bookworm, Skeleton Knight in Another World 2, and The Exiled Heavy Knight Knows How to Game the System.
FAQ About Summer 2026 Anime
What is the best Summer 2026 anime?
The biggest Summer 2026 anime include Mushoku Tensei: Jobless Reincarnation Season 3, BLEACH: Thousand-Year Blood War – The Calamity –, Re:ZERO Season 4, and That Time I Got Reincarnated as a Slime Season 4.
Which Summer 2026 anime are best for fantasy fans?
Fantasy fans should start with Mushoku Tensei Season 3, Slime Season 4, Re:ZERO Season 4, Daemons of the Shadow Realm, and Ascendance of a Bookworm.
Which Summer 2026 anime are best for romance fans?
The best romance and rom-com picks include The Neat and Pretty Girl at My New School Is a Childhood Friend of Mine Who I Thought Was a Boy and The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You Season 3.
Are continuing Spring 2026 anime included?
Yes. Since the seasonal source list includes ongoing anime in the Summer 2026 list, some titles above began in Spring 2026 and continued airing during Summer 2026.
