Anime adaptation of "Gimai Seikatsu" is scheduled for release in 2024

In the recently held livestream event of the MF Bunko J Summer School Festival, important information about the anime adaptation of Ghost Mikawa and Hiten's "Gimai Seikatsu" (Days With My Stepsister) light novels was announced, including a key visual, trailer, main staff, and an expected premiere in 2024.



The cast announced for the anime includes Kōhei Amasaki as Yuta Asamura, Yuki Nakashima as Saki Ayase, Minori Suzuki as Shiori Yomiuri, Daiki Hamano as Tomokazu Maru, and Ayu Suzuki as Narasaka Maaya.

Tsutomu Ueno is directing the anime at Studio DEEN. The series scripts are supervised by Mitsutaka Hirota, while Manabu Nii is in charge of character design.

The story of "Gimai Seikatsu" revolves around Yuta Asamura, who gains a stepsister, Saki Ayase, after his parents remarry during his high school years. Saki is the top student in her class. Due to their parents' influence, they both understand male-female relationships and agree to maintain a balance—neither being too confrontational nor too compromising—to avoid family discord. Saki, who yearns for familial affection, often tries to distance herself, leaving Yuta in a dilemma about how to be a suitable older brother. The narrative depicts the development of their relationship as they gradually grow accustomed to each other.