kamiya chiaki, reisen udongein inaba, yagokoro eirin, touhou, bad id, bad pixiv id, 2girls, alcohol, animal ears, back, bare back, bare shoulders, bath, blue eyes, blush, braid, breasts, cup, female focus, grey hair, groin, hat, heart, holding, impossible towel, large breasts, long hair, looking at viewer, looking back, multiple girls, naked towel, nipples, nude, nurse cap, purple hair, rabbit ears, red eyes, sake, same-sex bathing, shared bathing, sideboob, smile, surprised, towel, water, wet