Secret Sorrow of the Siblings

User Summary Kaito is a a bit inferior to his intelligent and athletic twin brother Rikuto, and by an accident discover their younger sister Arisa fellating Rikuto. This brings a bigger hatred towards his brother - as well as his sister; so while Rikuto is busy with a baseball tournament, Kaito is going to use the photo evidence of Rikuto and Arisa to get his revenge...