Seeing is believing when you see your sister's huge breasts! No condom, just a short-sleeved sailor uniform! I-cup, 101cm. Sunflower CHRV-205

I know I have to practice playing the recorder, but...the shape of the recorder is so mischievous, it makes me fantasize, right? I want to suck my dick...but I have to finish my etude perfectly before tomorrow's lesson, so I can't concentrate! When I try to practice, I start thinking about some naughty things...I don't have time to think about naughty things, so my reason tries to stop me, but I eventually succumb to my instincts. *What am I?*