In episode 8 of Oniichan wa Oshimai! (Onimai: I'm Now Your Sister!), titled the story shifts into high gear with a cozy winter break event. To prevent Mahiro from reverting to her shut-in ways during the holidays, Mihari invites Momiji, Asahi, and Miyo over for an overnight stay. Key Plot Points & Highlights
The episode reveals that when Asahi and Momiji first met, Asahi actually thought Momiji was a boy.
Studio Bind's high-quality animation is on full display during an energetic pillow fight that starts after a game of rock-paper-scissors escalates.
A major highlight involves a competitive scramble between Asahi and Momiji over who gets to bathe with Mahiro. Ultimately, Mahiro chooses to bathe with Mihari, leading to humorous "bath shenanigans" and a focused look at the characters' pasts.
The standard broadcast version often uses "Bunta stickers" (cat icons) or extra steam to cover nudity during bath scenes.
The uncensored (AT-X) version removes these stickers and reduces the steam, showing more detail, though it remains within the realm of "fanservice" rather than adult content. Manga Adaptation List of Onimai: I'm Now Your Sister! Episodes
After Asahi tells a scary story about a "Pillow Flipper," Momiji becomes so frightened that when Mahiro wakes her up later in the night, she accidentally wets her futon. In a show of growth, Mahiro washes the bedding and takes the blame to save Momiji from embarrassment. Version Differences (Uncensored vs. Censored)