saeki touma, chen, touhou, bad id, bad pixiv id, 1girl, animal ears, blush, cat ears, cat girl, cat tail, covering crotch, covering privates, fang, female focus, hat, head tilt, knees together feet apart, looking at viewer, mary janes, monochrome, mouth hold, multiple tails, naughty face, nekomata, nude, nude cover, panties, panties in mouth, shoes, side-tie panties, sitting, slit pupils, smile, solo, tail, underwear