Kabeana Heaven Hole

The little brother hates getting compared to his all-achieving older brother. On occasions, he goes to this store that has butts on the wall to enjoy himself. One day, he notices that his older brother has a mole on his right wrist, and the person in the wall that he often frequents also has a mole on his right wrist.
Included one-shot:
Oshiete Shotacon Sense!