2boys, all_fours, animal_ears, arm_support, beamed_eighth_notes, blush, bow, bowtie, heart, long_hair, male_focus, monochrome, multiple_boys, musical_note, no_shoes, open_mouth, otoko_no_ko, rabbit_ears, rabbit_tail, short_hair, sidelocks, sitting, socks, spoken_musical_note, sweat, tail, vest, wrist_cuffs