3girls, age_difference, artist_name, black_hair, blush, brown_hair, chair, classroom, curtains, eye_contact, feet_out_of_frame, holding_another's_wrist, indoors, kneeling, leg_between_thighs, looking_at_another, mole, mole_under_eye, multiple_girls, muromaki, original, pantyhose, school_uniform, sitting, smile, sunlight, sweatdrop, table, teacher_and_student, teamwork, twitter_username, undressing, window, yuri