Shinkon-san!

A childhood transfer student upends Takara's peaceful life at age six. Two decades of conflict pass before they end up married. Kyosuke Saionji is aloof, proud, and cynical, though his good looks do not reflect his personality. Takara struggles daily to manage Kyosuke's behavior, though beneath his rigid exterior lies a kind and caring nature. After Kyosuke claims he will "cheat" by watching adult media and leaves the house, Takara must respond.