2.5 Dimensional Seduction

, abbreviated as , is a Japanese manga series written and illustrated by Yu Hashimoto. It was serialized on Shueisha's ShÃÂnen Jump+ website from June 2019 to December 2025, with its chapters collected in twenty-five volumes. An anime television series adaptation produced by J.C.Staff aired from July to December 2024. A second season has been announced.

Premise

Masamune Okumura is a second-year high school student who serves as the president and only member of his school's manga club. An , he claims he has no interest in real girls due to his obsession with a fictional character named . Suddenly, a first-year student named Lilysa Amano, who is passionate about cosplay, joins the club and recruits Okumura to be her official photographer. When Okumura learns her favorite character is also Liliel, he starts to fall in love with her, making him feel conflicted. Other girls soon join the club as well, including Okumura's childhood friend Mikari Tachibana, whose unrequited love for him constantly leaves her frustrated.

Characters

Okumura is a second-year high school student who is the president of his school's manga club. He is an who has been obsessed with a fictional character named Liliel since he was young. He has put up posters of Liliel in the club room and has DVDs of her anime series. His mother abandoned his family when he was young. Initially, he did not like the idea of falling in love or having a relationship, which resulted in him isolating himself from others. However, as the story progresses, he begins to open up thanks to the girls in the manga club.

Lilysa is a beautiful first-year student who joins the manga club. Due to her passion for cosplay, she recruits Okumura to be her photographer. Like Okumura, she is also a fan of Liliel. She was first inspired to become a cosplayer when she visited a cosplay event. She wears glasses outside of cosplay. Though initially oblivious, she starts to slowly fall in love with Okumura later on.

Mikari is a first-year student who is Okumura's childhood friend and Lilysa's classmate. A gorgeous and popular model, she has a crush on Okumura since they were young, which he has never noticed. At the end of the series, she becomes Okumura's girlfriend.

753Ã¢ÂÂ¡

753Ã¢ÂÂ¡ is a professional cosplayer. Due to her popularity, she is considered to be one of the four Heavenly Queens of Cosplay. Her stage name is pronounced as . She takes an interest in Okumura as he looks like exactly like her favorite character, Prince Kai.

Magino is a cosplayer who is willing to give Lilysa and Okumura advice.

Ogino is a photographer who hangs out with Magino. He serves as a mentor for Okumura.

Mayuri is a popular new high school teacher who becomes the advisor of the manga club. She is a former cosplayer known as , one of the four Heavenly Queens of Cosplay. Later on, she reconnects and enters into a relationship with her female best friend, Eli.

Nonoa is a rookie cosplayer who is a huge fan of Lilysa. Having experienced trauma in the past, she has a shy personality. She desperately wants to befriend Lilysa, but has trouble doing so due to her anxiety and insecurity.

Aria is a and a new cosplayer who does not have much knowledge about anime and manga. She is the daughter of manga artist Yoichi Higarashi and originally took up cosplay to reach him, as her parents got divorced when she was young. As the series progresses, she starts to develop feelings for Okumura.

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Higarashi is a manga artist who is the author of Liliel: Side Story, a spinoff manga of Ash's War Chronicles, and Aria's father. He previously created the manga Valkyries Battlefield, which was quickly cancelled due to its poor reception and sales. His only fan letter came from Okumura, which he continues to treasure. Despite his previous failures as a manga artist, the fan letter helped inspire him to continue his career. His real name is Yo Kisaki.

Media

Manga

Written and illustrated by Yu Hashimoto, the series was serialized on Shueisha's ShÃÂnen Jump+ manga website from June 15, 2019, to December 20, 2025. Shueisha collected its chapters in twenty-five volumes, released from October 4, 2019, to February 4, 2026.

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

Anime

An anime television series adaptation was announced on December 10, 2022. It was produced by J.C.Staff and directed by Hideki Okamoto, with scripts written by Takao Yoshioka, character designs handled by Tomoyuki Shitaya, and music composed by Hiroaki Tsutsumi. The series aired from July 5 to December 13, 2024, on Tokyo MX and other networks. For the first cour, the opening theme song is , performed by Meychan, while the ending theme song is "Watch Me", performed by Kaori Maeda and Akari KitÃÂ as their respective characters. For the second cour, the opening theme song is , performed by Soraru, while the ending theme song is "Release Sigh", performed by Kaori Maeda, Akari KitÃÂ, Sayumi Suzushiro and Sayumi Watabe as their respective characters. Sentai Filmworks licensed the series in North America, Australia and British Isles for streaming on Hidive.

Following the airing of the final episode, a second season was announced.

Video game

An online role-playing video game developed by Aiming and Team Caravan, titled , was announced during Jump Festa 2024. It was released for iOS and Android on September 3, 2024. A PC version was released on October 31, 2024. The English and Simplified Chinese versions ended service on January 14, 2026.

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. By January 2022, the series had one million copies in circulation between its digital and print releases.