(I’ve spent 3 days trying to figure this was an actual request)

Tsukiyama, he would be the biggest one into it, likely sucking the breast milk so often that s/o doesn’t stop lactating. He treats it like a drug just as much as his bloody handkerchief.

Kaneki, boy has a mommy kink. Pet his hair and let him live out his fantasies.

Ayato maybe? he’d act cocky like its an assertion of power but really he just likes it, he feels safe while sucking on s/o’s breast and hates that. Would probably get grumpy and bite on s/o’s nipple if they said anything about how cute he looks.

Touka would be far too shy and flustered but definitely not opposed to s/o sucking from hers.

Uta. With his curiosity he’s all too happy to take a taste. He doesn’t really care for the flavor but doesn’t stop. And squeezes the breast to watch more milk drip out before licking it up.

Itori would think it’s hot. Probably get drunk and tell Uta and Yomo all about your bedroom adventures and jokingly offer them a taste. But otherwise not super into it.

Bonus: Because I’m on some kind of roll here

Juuzou, with his warped views he really doesn’t see why it would be considered odd. He enjoys it right? and you do too? he likes s/o’s flavor, and their breasts are extra soft while filled.
Will hug s/o in public, smiling so innocently, and say “Can I have some milk now (Y/n)-chan?”