yamanaka kotetsu, tiamat (fate), fate/grand order, fate (series), game cg, official art, third-party source, 1girl, absurdly long hair, aqua hair, aqua nails, bikini, black sarong, blue bikini, breasts, breasts apart, bright pupils, closed mouth, crossed bangs, curled horns, dragon girl, dragon tail, earrings, fingernails, foot out of frame, hair between eyes, halterneck, hand in own hair, high heel sandals, highleg, highleg bikini, horns, indoors, jewelry, large breasts, large horns, leg tattoo, leg up, lips, long hair, long sidelocks, looking at viewer, navel, pink eyes, pointy ears, sandals, sarong, sarong hold, shawl, sidelocks, smile, solo, split ponytail, standing, standing on one leg, stomach tattoo, swimsuit, symbol-shaped pupils, tail, tattoo, tiamat (swimsuit archer) (first ascension) (fate), very long hair, very long sidelocks, white pupils, x-shaped pupils