Rule 34 Dev - 1ace1 1boy abs ai_generated armpit_hair armpits biceps blonde_hair boku_no_hero_academia cocky flexing gym holding_phone katsuki_bakugou male male_only mirror mirror_selfie muscles muscular muscular_arms muscular_chest muscular_thighs my_hero_academia naughty_face nipples pants_down pecs penis phone pubic_hair selfie shirt_lift smile smirk smug solo solo_male standing tank_top tank_top_lift|12478101168