Seven
He basically masterbates as a past time when your not around he has a entire folder of your nudes saved on his phone for when ever he needs it he loves cuming while starting at your nacked body it's a feeling porn just can't get him for some reason.
Zen
He never masterbates unless he has to, he much prefers the real thing he only does it as a last resort. Although he loves it when you offer to jack him off your touch makes him so horny.
Yoosung
He used to all the time before he met you, for him it's a very private thing not to say you haven't caught him a few times, he gets super embarrassed. He often masterbates to pictures of you your beautiful face is even enough to make him cum.
Jumin Han
Jumin doesn't do it often but when he does he loves to make you watch he loves watching you get wet wet and urge for his touch it only turns him on more he uses it every now and then for forplay instead of eating you out to keep it far. He makes you lick it up afterwards which turns you both the fuck on.
Saeran
He doesn't your always there on command ready to give him a blowjob so he never needs to. He never wants to come anywhere besides you pussy or mouth ever. He loves fucking your mouth so much
V
He dose every now and then when your not around he actually quite enjoys coming to some nice ruff porn, still images really don't do it for him
