Omg!!! Am sooo sorry I meant to give a thumbs up instead of down one (￣∇￣").....sorry
I see your point but I hope that Ren will grow quickly and they'll be reversible... :D
No....(⌒▽⌒) it's not that I want Ren remain as a sixteen child, I highly hope that Ren will grow as an adult quickly because I think he'd definitely becomes Haru's hot devil uke (at least in my Ren future imagination). On top of that because I want Haru and Ren have a serius sex soon (yes I'm a perv just like Ren （〜^∇^)〜)
It's ok...it's ok...
"Return of the devil" ( http://www.mangago.zone/read-manga/super_lovers/mf/f3d1b2b51cf77f59/Vol9_Ch26/pg-10/) hahahahaaa
Ren is a devil for haru nor for everyone. For now he is definitely the cute devil uke but I'm really sure when he became an adult or at least when he reach his twenty he'd show the kind of hot devil uke ε=ε=(ノ≧∇≦)ノ