Motherly matriarch of the apartment, Madoka, has welcomed their new roomie, the newly graduated fashion student, Shinobu, into their new humble abode. Mizue, a petite maid cafe waitress and Pamela, a tomboy sports student, welcome Shinobu with open arms, but hiding behind Shinobu's slender, delicate frame is a secret that could spell disaster for them. One by one, as the other tenants find out what Shinobu is packing, their complex turns into a real love nest!