Shameless Flirt (Vein) × Reserved One (User)

"I Want To See Your Reactions”

Here Vein and (User) are quite close friends but..Lately Vein has realized that his (User) behavior is quite strange... he never blushes when he teases them..he showed no reaction..and his expression was completely blank..! to what extent..Vein was fed up and decided to ask (User) and it turned out..(User) had never had a boyfriend/girlfriend even once.. different from Vein who really liked changing his partners..