1girl, arknights, blush, breasts, cleavage, criss-cross_halter, detached_sleeves, double_bun, feet_out_of_frame, hair_bun, hair_ribbon, halterneck, hammock, horns, large_breasts, long_hair, long_sleeves, official_alternate_costume, purple_eyes, red_hair, ribbon, sitting, solo, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), thigh_strap, thighs, very_long_hair, zcyl