Rule 34 Dev - 1boy 1girl black_hair breasts covering_own_mouth glasses hand_over_own_mouth hibike!_euphonium highres jitome kanmuri_neko kousaka_reina large_breasts messy_hair neoki_yashi_no_ki_(vocaloid) no_mouth parody purple_eyes running school_uniform short_hair taki_noboru teacher_and_student tuba-kun yellow_background|23332121163