[YST-225] My sister's obscene mouth and greedy throat are dedicated to me.

The elder sister, Thysa, who is loved as a mouth-ma-co-guy from her real brother. The saliva is hung indecently in the rough irama which seems to penetrate the back of the throat and the cheek, and the younger brother of the habit which distorted it swallows while sounding, and it is ascension while exposing a sloppy ahe face when it spreads ma-ko and it does Kunni's blame. It was exhausted again and again by the blame from the obsessive younger brother though it was understood that it was Ikenai.