Hasegawa Subaru enters a basketball club of Nanashiba High School, but the activity of the club gets suspended because the club leader falls in love with an 11 year old daughter of the coaching teacher. Subaru's aunt asks him to coach a basketball club of elementary school girls. At first, he is reluctant to teach small girls, but he devotes himself to the club as he knows the complex circumstances of them.
Hoppy said: What do they mean complex circumstances?
It's most likely going to be
A. The lolis want some romance from the main (Slam Dunk + Kodomo no Jikan)
B. Superhuman athletes
C. Both of these
I was thinking more along the lines of some manner of trauma or abuse, which would also being back memories of Kodomo.
I would point out that if they're superhuman athletes already they might not be so desperate for a coach they're asking suspected pedophiles... I'm thinking this is way into the small time nobodies. The club can only afford a ball because one of the members had one in the basement kind of thing.