2boys anal anus aqua_eyes aqua_hair black_hair black_jacket blush censored closed_mouth collarbone commentary demon_slayer_uniform drooling half-closed_eyes highres hinghoi jacket kimetsu_no_yaiba long_hair male_focus mosaic_censoring multicolored_hair multiple_boys multiple_penises nose_blush on_bed open_mouth otoko_no_ko penis saliva sex sidelocks solo_focus speed_lines spread_legs tearing_up testicles tokitou_muichirou trembling two-tone_hair yaoi