ikari manatsu, tainaka ritsu, tainaka satoshi, k-on!, arm grab, bad id, bad pixiv id, 00s, 1boy, 1girl, blush, breast smother, breasts, brother and sister, brown eyes, brown hair, camisole, cleavage, face to breasts, flying sweatdrops, grin, hairband, happy, headlock, hetero, looking at viewer, short hair, siblings, simple background, skirt, small breasts, smile, standing, teenage girl and younger boy