Touka – Sex in abandoned buildings or at inopportune times pleases her. She also loves being on top and slightly dominating.
Uta – Definitely into roleplaying. The weirder the better. He molds his kagune into a variety of tools, as well. Sometimes he and his partner wear masks.
Oneshot!Kaneki – A fan of sex in the shower. And possibly oral sex.
Hsaio – sex outdoors. Away from people, but outdoors, under the stars.
ghoul!Seidou – he probably likes blood to be involved. Enjoys doggy-style. May or may not ramble about his parents when he orgasms which is a bit of a buzzkill for his partner .