2boys, age_difference, aged_up, aqua_eyes, aqua_hair, black_bodysuit, blue_hair, blush, bodysuit, book, chongyun_(genshin_impact), earrings, genshin_impact, holding, holding_book, hood, hood_down, jewelry, long_sleeves, male_focus, multiple_boys, nose_blush, orange_eyes, parted_lips, simple_background, single_earring, size_difference, sweat, tassel, tassel_earrings, upper_body, wamosukeda, xingqiu_(genshin_impact), yaoi