2boys, akaashi_keiji, animal_feet, bird_boy, bird_legs, bird_wings, black_hair, black_pants, bokuto_koutarou, book, brown_wings, chengongzi123, couple, face-to-face, feathered_wings, grey_wings, haikyuu!!, harpy_boy, hug, hug_from_behind, leaning_back, leaning_forward, long_sleeves, looking_at_another, male_focus, monster_boy, monsterification, multicolored_hair, multiple_boys, open_book, pants, parted_lips, reclining, short_hair, simple_background, smile, spiked_hair, streaked_hair, talons, topless_male, two-tone_hair, white_background, white_hair, wings, yaoi