u u zan, patchouli knowledge, touhou, touhou gensou eclipse, game cg, highres, non-web source, official art, second-party source, 1girl, alternate costume, barefoot, bikini, book, breasts, chair, cleavage, crossed legs, demon tail, feet, holding, holding book, hood, hood up, horned hood, horns, legs, long hair, long sleeves, looking at viewer, navel, purple bikini, purple eyes, purple hair, sitting, solo, stomach, swimsuit, tail, toes, transparent background, very long hair