After her sudden death at the hands of an assassin, the former granddaughter of a Yakuza boss reincarnates into an otome game as the heroine. The game is, of course, set in the time of early European mafia (but with magic and other special abilities somehow)—specifically a kingdom where the royal family is supported behind the scenes by five major crime families! "Please God, whyyy, I only wanted to life a normal life!"