k-on!
akiyama mio, tainaka ritsu, tainaka satoshi
saipin
1boy, 2girls, ^^^, bare shoulders, blush, bow, breasts, brother and sister, brown hair, cameltoe, hair bow, large breasts, listen!!, long hair, microphone, microphone stand, multiple girls, navel, nipples, o_o, panties, siblings, striped clothes, striped panties, underwear
bad id, bad pixiv id, photoshop (medium)