Rule 34 Dev - 2boys age_difference animated arms_behind_head artist_request barefoot big_hero_6 black_hair brother brothers collarbone eye_contact eyebrows facing_another feet finger_in_another's_mouth finger_in_mouth finger_to_mouth flat_chest floor french_kiss grey_eyes hiro_hamada hug incest indoors kiss legs looking_at_another loop love lying male male_focus mouth_pull multiple_boys older_man_and_younger_boy on_back on_floor push-ups romantic shirt short_hair shorts shota sibling siblings sitting sitting_on_person size_difference smile tadashi_hamada tongue video wooden_floor yaoi|3964958238