2boys, black_hair, collarbone, empty_eyes, enyalee, eye_contact, from_side, hair_slicked_back, hisoka_morow, hunter_x_hunter, illumi_zoldyck, long_hair, looking_at_another, male_focus, multiple_boys, nude, playing_with_another's_hair, red_hair, seductive_smile, short_hair, skinny, smile, yaoi