1boy, 1girl, bed_sheet, beret, black_headwear, black_wings, blue_archive, blush, erogomatinpo, half-closed_eyes, halo, hat, head_wings, koharu_(blue_archive), long_sleeves, looking_at_viewer, lying, neckerchief, nose_blush, off_shoulder, on_back, on_bed, pink_eyes, pink_hair, pink_neckerchief, sailor_collar, school_uniform, sensei_(blue_archive), serafuku, sound_effects, speech_bubble, sweat, twintails, veins, white_sailor_collar, wings