Perhaps it's time for Iruma to wake up sexually and start noticing the two splendid beauties (three if you count Kirio) that surround him. Lied, we're counting on you.
I have always wondered what it is like to live with a sister, younger or older. Yes, I know it sounds extremely suspicious given my userpic and name, but still. I only had two older brothers who were 20+ years older than me, so my sibling life was boring.
@Standarduser_ Iruma is essentially a male shonen version of Bakarina. Especially if you enjoy adding someone like Az to his harem too.
@Katharistis I find it somewhat avant-garde that some kind of ecchi comedy has such a powerful psychological impact on people of culture.