1boy, bare_pectorals, black_hair, blue_eyes, bottle, fate/grand_order, fate_(series), fujimaru_ritsuka_(male), fujimaru_ritsuka_(male)_(brilliant_summer), green_male_swimwear, grey_shirt, holding, holding_bottle, hood, hood_down, hooded_shirt, kamenakake, male_focus, male_swimwear, muscular, muscular_male, open_clothes, open_shirt, pectorals, shirt, short_hair, simple_background, smile, solo, teeth, twitter_username, upper_body, v, water_bottle