There once was an ayakashi called Karma who challenged his victims to a battle of wits. If the subject succeeded, the ayakashi would grant them one wish, but if they lost, he would devour their soul. At the same time, there was a young monk called Hanasaku Ikkyuu, who was famed for his cleverness. He used to eagerly sharpen his mind, solving challenging riddles sent to him, until his mother fell ill. When he found that his cleverness was of no use in helping her, he gave it up.

Karma seeks out Ikkyuu, eager to best him in a battle of wits and consume his soul. One day, Ikkyuu rescued a young beggar boy, only to see him fall ill with a mysterious illness. That same day, Karma finally finds Ikkyuu and offers him his dangerous bargain. Thanks to Karma, will Ikkyuu finally have a way to use his cleverness to help the people around him?

Enjiro is a talented baseball player, but has to quit due to a 100 million yen debt. Komado's family runs Benten High School, but the school is on the brink on bankruptcy and (for some strange reason) the only way to save it, is to win the National High School Baseball Tournament (a.k.a the Koshien Tournament).
Seeing Enjiro as their savior, Komado offers to pay him 100 million yen, if he joins the school's baseball team and wins the Koshien Tournament.