!?, 1boy, 1girl, ahoge, artoria_caster_(fate), artoria_pendragon_(fate), bare_shoulders, bathing, bathtub, blush, breasts, closed_eyes, collarbone, fate/grand_order, fate_(series), fujimaru_ritsuka_(male), greyscale, heart, hxd, long_hair, monochrome, open_mouth, short_hair, small_breasts, smile, towel, twintails