In the Maniac ni Aishite series:

V.1 - Maniac ni Aishite
Morita, a hopless otaku, falls in love with his popular classmate, Sakura. As his otaku approach to woo Sakura collides with reality, things heat up. Will he be able to become the man that Sakura desires?

A sexy and funny story about the reality of love.

V.2 - Chou Maniac ni Aishite
The story of Morita, an “otaku” whose perverted fantasies about his dearly beloved boyfriend Sakura, keep him with a bloody nose day in and day out. While Morita loves Sakura with a passion that only a true “otaku” can muster, he can’t bring himself to tell Sakura that his only hobby is “Sakura” himself! In order to get Sakura to fall for him all over again, Morita pledges to do everything in his power and become an “irresistible man.” With never before published bonus material, this book will have your “otaku” gauge at full throttle from start to finish.

V.3 - Geki Maniac ni Aishite (Hyper Loving a Maniac)