2.5 Dimensional Seduction Books in Order
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The 2.5 Dimensional Seduction series by Yu Hashimoto includes 18 books published between 2022–2026.
✓ All 18 books verified against the publisher's official series list.
Publication order
In the order the books were originally released.
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Buy on Amazon2.5 Dimensional Seduction Vol. 1
2022 · Yu Hashimoto
A hot-blooded romantic cosplay comedy begins when an otaku meets a girl who dresses up as his favorite manga character. This sexy manga series comes…
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Buy on Amazon2.5 Dimensional Seduction Vol. 2
2022 · Yu Hashimoto
SHOW IT OFF TO THE WORLD! Manga club president Okamura always insisted he had no interest in real live 3D girls. His heart belonged to his favorite…
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Buy on Amazon2.5 Dimensional Seduction Vol. 3
2022 · Yu Hashimoto
SEXY COSPLAY SECRETS AND SURPRISES! The upcoming culture festival gives Lilysa and Mikari an idea for a surprise club activity. Hint, hint: it…
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Buy on Amazon2.5 Dimensional Seduction Vol. 4
2022 · Yu Hashimoto
WHAT’S THE REAL MEANING OF COSPLAY? Okamura and Lilysa take part in a cosplay convention in a bid for the manga club’s survival. Their plans are…
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Buy on Amazon2.5 Dimensional Seduction Vol. 5
2023 · Yu Hashimoto
CON SUCCESS WON'T STOP TROUBLE AT SCHOOL FOR THESE DEDICATED OTAKU! Okumura is still obsessed with 2D character Liliel, but another convention brings…
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Buy on Amazon2.5 Dimensional Seduction Vol. 6
2023 · Yu Hashimoto
OTAKU STRUGGLE TO CONNECT! Lilysa and Nonoa want to be friends, but when they try to reach out, their emotions get lost in translation. Feeling…
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Buy on Amazon2.5 Dimensional Seduction Vol. 7
2023 · Yu Hashimoto
CAN COSPLAY REUNITE A FAMILY? Hoping to find her long-lost mangaka father, Aria sets out to make headlines at Summer Comiket, and even Mikari pitches…
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Buy on Amazon2.5 Dimensional Seduction Vol. 8
2023 · Yu Hashimoto
OTAKU BRINGING FAMILY TOGETHER! The news of Lilysa’s Paratroopers cosplay has reached Aria’s father, the author of Liliel: Side Story, as Aria hoped.…
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Buy on Amazon2.5 Dimensional Seduction Vol. 9
2024 · Yu Hashimoto
REACHING FOR NEW HEIGHTS OF OTAKU SKILL! As an otaku obsessed with a 2D girl, Okumura is not good at reading emotions in his real-life photography…
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Buy on Amazon2.5 Dimensional Seduction Vol. 10
2024 · Yu Hashimoto
A CONNECTION FROM THE PAST TAKES CENTER STAGE! Okumura is thrown for a loop when he learns that Abe Marina, the only 3D girl he ever had feelings…
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Buy on Amazon2.5 Dimensional Seduction Vol. 11
2024 · Yu Hashimoto
A NEW OTAKU TAKES THE STAGE! The student council holds a cosplay café for the culture festival and Vice President Marina reveals herself as an otaku…
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Buy on Amazon2.5 Dimensional Seduction Vol. 12
2024 · Yu Hashimoto
A NEW COSPLAY CHALLENGE! Lilysa hits a snag coming up with a Liliel costume and the manga club decides to do a cosplay of a game Magic Girls for…
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Buy on Amazon2.5 Dimensional Seduction Vol. 13
2025 · Yu Hashimoto
CAN COSPLAY SAVE HER? At Comiket, Heavenly Queen of Cosplay Nagomi steals the show with her Majo-Majo cosplay, and Lilysa collaborates with another…
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Buy on Amazon2.5 Dimensional Seduction Vol. 14
2025 · Yu Hashimoto
OTAKU ARE SWEPT UP IN A WHIRLPOOL OF LOVE! Valentine’s Day is awkward when Okumura receives chocolates from both Mikari and Lilysa. Things get even…
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Buy on Amazon2.5 Dimensional Seduction Vol. 15
2025 · Yu Hashimoto
IS THIS A NEW OTAKU? Okumura is finally moving on to the third year of high school, and with a new academic year comes new first-years coming to tour…
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Buy on Amazon2.5 Dimensional Seduction Vol. 16
2025 · Yu Hashimoto
WHAT DOES IT ALL MEAN? Together with new member Hana Tsubaki, the manga club is attending the cosplay convention Cossto, where the venue is buzzing…
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Buy on Amazon2.5 Dimensional Seduction Vol. 17
2026 · Yu Hashimoto
IS THERE A REASON TO KEEP GOING? Lilysa is hard at work making new Liliel cosplays, but when a new club member asks her why she's making a cosrom,…
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Buy on Amazon2.5 Dimensional Seduction Vol. 18
2026 · Yu Hashimoto
WHY CAN'T WE GET IT RIGHT? The manga club joins the duo behind Heavenly Queen of Cosplay Awayuki Erika on a training camp. The location is…
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✓ = numbering verified against the publisher's official series list.
📅 = publisher-announced release dates; subject to change. All upcoming releases →
Frequently asked questions
What order should I read the 2.5 Dimensional Seduction books in?
Read them in publication order, starting with “2.5 Dimensional Seduction Vol. 1”. Start with “2.5 Dimensional Seduction Vol. 1.”
How many books are in the 2.5 Dimensional Seduction series?
We list 18 books by Yu Hashimoto , published between 2022–2026.
When is the next 2.5 Dimensional Seduction book released?
The next book is “2.5 Dimensional Seduction Vol. 19”, book 19 in the series, expected Aug 18, 2026. That is the publisher's announced date and can change; this page updates when it does.
Where can I buy the 2.5 Dimensional Seduction books?
Each title above links to Amazon. See our affiliate disclosure.
Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.