Episode 1: Meetings Are Gentle and Firm, Imp Paradise
Due to unavoidable circumstances, Haruomi is freeloading at his relatives', the Orifushi sisters', house. Since that day, his common everyday life has come to a screeching halt.
The eldest sister is the gentle and maternal Natsumi. The second is Akina, a bright and cheerful girl for whom a smile is well-suited. The youngest sister is the bratty Mafuyu.
The curtain rises on Haruomi's new life in the company of these three beautiful sisters.