Living by the Arakawa River, the vibrant Recruit, formerly Kou Ichinomiya, navigates the daily chaos stirred up by his eccentric neighbors. Amidst this colorful backdrop, the arrival of new quirky residents—a towering Amazoness and her Tengu minions, alongside Captain, defender against Venusians—promises even more uproar. Amidst the whirlwind, Recruit delves deeper into the enigmatic past of his beloved Nino.