Sundome 2007 ( 4.3)

Hideo Aiba (Atsuji Ninomiya) is a reserved and obedient high school student, who has never had any girlfriend. He spends all his energy on masturbating, his true reason for living. His life and his solitary activities will take a radical change when a new transfer student, the sexy Kurumi Sahana (Akane Suzuki), joins his class.