1girl, arknights, bare_shoulders, bikini, black_bikini, breasts, cleavage, criss-cross_halter, dated, demon_horns, detached_sleeves, feet_out_of_frame, food, hair_ornament, hair_rings, halterneck, hammock, holding, holding_food, holding_ice_cream, horns, ice_cream, large_breasts, looking_at_viewer, midriff, navel, official_alternate_costume, purple_eyes, red_hair, sabou_san-shitsu_kokoro, shirt, side-tie_bikini_bottom, sitting, solo, star_(symbol), star_hair_ornament, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thigh_strap, white_shirt, white_sleeves