Watashi no Oniichan

Watashi no Oniichan is a bishoujo-focused manga series released as a collection of individual booklets. Each installment highlights a different featured character, with the volumes creatively titled to reflect their unique themes: "New!" starring Mion, "Two!" featuring Ashita, "Hot!" centered on Harusame, "Why!?" following Sonome, and "Bye!" showcasing Eruron. The series also includes a special bonus volume titled "eXtra!" that introduces the character Tetora. What set this release apart was its unique packaging strategy. Each manga booklet was sold alongside a limited-edition plastic figure assembly kit, allowing fans to build a model of that specific volume's highlighted heroine. These collectible figures were designed by Yuki Ohshima, adding an exclusive tactile element to the reading experience and making each installment a distinct collector's item for enthusiasts of the series.