Rule 34 Dev - abs balls demon demon_slayer diphallia diphallism dominant_male gay gay_sex hot_man human kimetsu_no_yaiba kokushibo light-skinned_male long_hair male michikatsu_tsugikuni multi_eye multi_genitalia multi_penis muscular_male muzan muzan_kibutsuji penis submissive_male tentacle tentacle_on_male tentacle_sex tied_up|11270475840