1boy, 1girl, blue_theme, breasts, cleavage, collarbone, comic, eyes_visible_through_hair, fate/grand_order, fate_(series), fujimaru_ritsuka_(male), glasses, hair_over_one_eye, koyuki_(kotatsu358), large_breasts, looking_at_another, mash_kyrielight, monochrome, one-piece_swimsuit, open_mouth, school_swimsuit, school_uniform, speech_bubble, swimsuit, teeth, upper_teeth_only