2.5 Jigen no Ririsa

2.5 Jigen no Ririsa, also known as 2.5 Dimensional Seduction, is a manga series created by mangaka Yuu Hashimoto and serialized in Shueisha's Shonen Jump+ platform beginning in 2019. The series emerged during a period of significant growth for otaku-culture-themed media, positioning itself as both a comedy and a romantic exploration of the world of professional and hobbyist cosplay. Hashimoto developed the work to highlight the technical craftsmanship and emotional dedication required for cosplayers, juxtaposing the character-driven narrative with the intricate visual details of costume design.

The design and artistic approach of the manga reflect a clear emphasis on character aesthetics and subculture accuracy, which resonated with audiences interested in the behind-the-scenes realities of anime conventions and photoshoots. By centering the story on the complex relationship between a manga artist and a young woman passionate about emulating his favorite 2D character, Hashimoto creates a meta-commentary on the medium itself. The series was well-received for its earnest portrayal of creative expression, eventually leading to a widespread franchise that includes both print volumes and an anime adaptation.