Bandai Namco has just launched a new Waifu game with the longest Japanese title called The Asterisk War: The Academy City on the Water (学戦都市アスタリスクフェスタ 煌めきのステラ). The game is now available in Japan on both the App and Play Store.
To be honest, I have not tried the game but I do know that the game is based on a Japanese Novel Series, The Asterisk War. Players can collect the different Waifu characters and unlock their individual story lines and get to know them better.
Publisher
Bandai Namco
Platform