Can someone explain to me why the short girl was like,,,, having a moment with the piggy back ride there. I'm kind of confused.
I guess tall girl's spine is rather prominent and exerted some pressure on... places. Hence also her pulling short girl against it. She's mean like that.
I'd put that one down as Manga Logic.
This is going to turn into Please Bully Me, Miss Villainess!
They are both getting more and more conscious of their romantic/erotic aspect of their games.