Slum online - Hiroshi Sakurazaka

"...I log in and Tetsuo comes to Versus Town. A make-believe man in a make-believe city. He was new there, and he had come for one thing: to fight."

Etsuro Sakagami is a college student who feels uncomfortable in reality, but when he logs onto the combat Massively Multiplayer Online (MMO) game Versus Town, he becomes "Tetsuo," a karate champion on his way to becoming the most powerful martial artist around. While his relationship with new classmate Fumiko goes nowhere, Etsuro spends his days and nights online in search of the invincible fighter Slasher Jack. Drifting between the virtual and the real, will Etsuro ever be ready to face his most formidable opponent?