Baseball Heaven(2006)

Yakyuu Tengoku

The Tokyo Elephants are having a great season thanks to their star pitcher, Uno. The rookie is well liked and friendly to everyone, but for some reason, he is stand-offish to Ogata, the shortstop. When Uno gets drunk, Ogata takes the opportunity to confront him and finds out that the reason for the cold shoulder is completely different from what he expected. To keep things from going too far too fast he gives the condition that if he wants to get some action off the field, Uno must pitch a perfect game!

(Source: Blu)

Note: Includes one extra chapter.