[JUKF-055] My brother is my onapet Natschan, Nana Tojo.

There is a 3-year-old brother who is peeping into the place where she masturbates and brings her boyfriend and is when she is interested in naughty things rather than studying. One day, my brother sneaked into Those's room and failed at night when he went on a daily basis, and the power relationship reversed on that day and the brother who turned into a lower me will be treated as a butter dog by his sister like a daily routine ... It is said that blood can not be contested, but this brother has this sister!