Okujou no Bai-BaiBye-Bye on the Rooftop ; Good-bye on the Rooftop ; Okujyou no Bye-Bye

Nogi is the fearless and respected karate black-belt who beats up bullies without breaking a sweat. But to Fujiwara, he's just "Kei-chan", best friend and object of his secret affections. Can their friendship survive? Or develop into something more?