Akai Ringo no Nakami Jijou

Yuya is a transfer student who has been unable to adapt to a new class because of his difficulty in getting along with people and also due to a complex that he has been trying to hide. He thought he was used to being alone and was ready to live his life that way at his new school, but his charismatic classmate Keiji plans otherwise. Note: The tankoubon extra chapter has not been scanlated.