1boy 1girl bags_under_eyes black_hair black_undershirt blue_archive blue_eyes blue_hairband blue_neckerchief blush cardigan censored erection gradient_background grey_cardigan hairband halo heart heart_censor hetero highres large_penis long_hair low_twintails naga_u neckerchief nose_blush open_mouth penis precum school_uniform serafuku solo_focus steaming_body sweat twintails twitching_penis ui_(blue_archive) upper_body wavy_mouth white_serafuku