inoue yoshihisa, hirasawa ui, nakano azusa, suzuki jun, k-on!, 3girls, animal ears, bdsm, bikini, black hair, blush, bondage, bound, brown eyes, brown hair, bullying, camera phone, cat ears, cellphone, crotch rope, embarrassed, fake animal ears, femdom, grin, hairband, humiliation, leaning forward, long hair, multiple girls, one-piece swimsuit, open mouth, phone, photographic proof, ponytail, pussy juice, red eyes, rope, school swimsuit, shibari, shibari over clothes, shiny skin, short hair, short twintails, simple background, smile, sweat, swimsuit, tan, thigh gap, thighs, twintails, white background, yuri