Rule 34 Dev - 1boy 1girl blush boxers bulge distraction erection erection_under_clothes freeballing game_cg hand_over_face head_out_of_frame hoshizun indoors male_underwear midriff open_mouth penis penis_awe pink_hair purple_eyes rokugatsu_no_tenshi sakamoto_shinobu school_uniform serafuku surprised underwear|212276493