who's the uke?

According to the mangaka, in the aftertext she wrote, the idol's the uke.

I was hoping the idol is the Seme (づ￣ ³￣)づ

gosh... I love such suke situations... that the idol... the doll like emotionless cold idol melted with emotions, cluelessly fell into the hands of that devouring older experienced male.... who would have thought that the older resisting guy would agree to fall emotionwise with the idol??