2boys, animal_ears, bangs, bara, bare_shoulders, black_tank_top, book, chain_necklace, couple, cropped_torso, dog_boy, dog_ears, elbow_rest, furry, furry_male, greyscale, head_on_another's_shoulder, holding, holding_book, horns, looking_at_another, male_focus, monochrome, multicolored_hair, multiple_boys, muscular, muscular_male, nipple_slip, nipples, open_book, pants, pectorals, reading, scar, scar_across_eye, scar_on_face, short_hair, sidepec, single_horn, streaked_hair, tail, tail_raised, tail_wagging, tank_top, thick_eyebrows, tiger_boy, tiger_ears, white_fur, white_hair, white_pants, yaoi