TVアニメ「Room Mate」

One Room is an anime entertainment franchise centered on the short-form series One Room, which presents intimate, relationship-focused stories. The franchise has continued across multiple seasons, including One Room Second Season and One Room Third Season, and is associated with the related series Room Mate. Its official updates highlight milestones such as the original series’ fifth anniversary, commemorative illustrations, and audience campaigns, alongside broadcasts and community announcements connected with the shows.

The franchise has also expanded beyond television. In December 2024, an animation novel game inspired by One Room was announced for release on January 11, 2025, bringing the series’ romantic storytelling into an interactive format. A new project, PROJECT OneLeaf, was announced at the same time as a completely new installment in the One Room series. The One Room Third Season has also been promoted through an online lottery, offering another way for fans to engage with the property. The franchise’s productions are credited to committees associated with SMIRAL and the respective series.