2.5 Dimensional Seduction (Japanese: 2.5次元の誘惑, Hepburn: 2.5-jigen no Yūwaku) is a Japanese manga series written and illustrated by Yu Hashimoto. It began serialization on Shueisha‘s Shōnen Jump+ website in June 2019. As of October 2022, the series’ individual chapters have been collected into fifteen tankōbon volumes.

Plot

Okumura is a second-year high school student who serves as the president and only member of his school’s manga club. An otaku, he claims he has no interest in real girls due to his obsession with a fictional character named Liliel. Suddenly, a first-year student named Lilysa Amano, who is passionate about cosplay, joins the club. When he agrees to be her photographer, Okumura discovers her favorite character is also Liliel. As a result, he finds himself conflicted about the situation.

Publication

Written and illustrated by Yu Hashimoto, the series began serialization on Shueisha‘s Shōnen Jump+ manga website on June 15, 2019. As of October 2022, the series’ individual chapters have been collected into fifteen tankōbon volumes.

In June 2021, Seven Seas Entertainment announced that they licensed the series for English publication under their Ghost Ship imprint.

Reception

Itachi Utada from Famitsu praised the story and characters of the series, particularly enjoying the cosplay elements present.

In the 2020 Next Manga Award, the series ranked fourth in the web manga category. The series has one million copies in circulation between its digital and print releases.

2.5 Dimensional Seduction
Cover of the first tankōbon volume, featuring Lilysa Amano as Liliel (left) and herself (right)
2.5次元の誘惑 (2.5-jigen no Yūwaku)
Genre	Romantic comedy
Manga
Written by	Yu Hashimoto
Published by	Shueisha
English publisher	NA Seven Seas Entertainment
Magazine	Shōnen Jump+
Demographic	Shōnen
Original run	June 15, 2019 – present
Volumes	15 (List of volumes)