Houchishoujo Game Gets Seitokai ni mo Ana wa Aru! Crossover on October 27
C4 Connect's idle RPG will bring the student council cast into its world, with pre-registration open from October 20 and a TV ad from October 31.
C4 Connect announced that the smartphone game Houchishoujo: Hyakka Ryouran no Moehime-tachi will hold a collaboration with the currently airing TV anime Seitokai ni mo Ana wa Aru!, starting on October 27, 2026 at 12:00, according to animeanime.jp.
The collaboration story sends the student council members to the world of Houchishoujo just before their school festival. The anime follows the manga by Muchimaro, serialized in Kodansha's Weekly Shōnen Magazine, and is animated by Passione.
A pre-registration event opened on October 20, 2026, offering up to 10 collaboration-exclusive gacha tickets, along with collaboration goods and a MetaPad.
A special collaboration TV commercial is scheduled to begin airing on October 31, 2026.
Background
Houchishoujo is a bishoujo idle-raising RPG developed by C4games and operated by C4 Connect, launched on March 24, 2017. The Seitokai ni mo Ana wa Aru! anime began airing on TOKYO MX and other channels on October 3, 2026; the original manga took first place in the comics category of the 2023 Next Manga Awards and has surpassed 2.7 million copies in circulation.
Quick answers
When does the Houchishoujo and Seitokai ni mo Ana wa Aru! collaboration start?
It starts on October 27, 2026 at 12:00.
What does the pre-registration event offer?
Up to 10 collaboration-exclusive gacha tickets, plus collaboration goods and a MetaPad.
When does the collaboration TV commercial air?
It is scheduled to air from October 31, 2026.