1girl, arched_back, arms_behind_head, arms_up, bodysuit, breasts, brown_eyes, brown_hair, fate/grand_order, fate_(series), floating_hair, fujimaru_ritsuka_(female), fujimaru_ritsuka_(female)_(chaldea_combat_uniform), grey_background, hanako_(onikutabetaiyo), long_hair, medium_breasts, parted_lips, skin_tight, solo, standing, straight_hair, twitter_username