C4 Connect has announced that its smartphone game Houchishoujo ~Hyakka Ryouran no Moehime-tachi~ will launch a collaboration with the currently airing TV anime Seitokai ni mo Ana wa Aru! on October 27, 2026 at 12:00.
The collaboration story follows the student council members as they are suddenly transported to another world just before their cultural festival begins. In the world of Houchishoujo, they set off on a major adventure while dealing with the chaos of an unfamiliar land. The crossover is set to blend the atmosphere of the otherworld with the group’s school life.
Pre-registration event begins October 20
Ahead of the in-game event, a pre-registration event started on October 20. Players can support the student council as they resolve one trouble after another behind the scenes and earn rewards.
The main reward is up to 10 collaboration-limited gacha tickets. The lineup also includes collaboration commemorative goods and a MetaPad. More details on the reward breakdown and acquisition conditions are expected in future updates.
Special TV CM set for October 31
A special TV commercial commemorating the collaboration is also scheduled to air from October 31, four days after the collaboration event opens.
About Houchishoujo and Seitokai ni mo Ana wa Aru!
Houchishoujo ~Hyakka Ryouran no Moehime-tachi~ is a beautiful-girl training idle RPG developed by C4games and operated by C4 Connect. It launched on March 24, 2017, and has been supported for its accessible style of raising characters and building up combat power.
Seitokai ni mo Ana wa Aru! is based on Muchimaro’s manga, serialized in Kodansha’s Weekly Shounen Magazine. The story follows Mizunoe Ume, a first-year student at Shiritsu Fujinari Gakuen High School, who joins the student council as an officer to improve internal assessment points and spends hectic days with its uniquely individual members. It is a student council love comedy.
The TV anime began airing on October 3, 2026 on TOKYO MX and other channels. Ryuuwa Naoyuki directs, with Imamura Ryou as character designer, Yokotani Masahiro handling series composition and scripts, and Passione producing the animation. Sakata Shougo voices Mizunoe Ume, Shiraishi Haruka voices Kotobuki Hisako, and Tomita Miyu voices Mutsu Komaro.
The original manga won first place in the comics category of the Next Manga Award 2023 and has surpassed 2.7 million cumulative copies in circulation.
