Digimon Xros Wars :: Zenjirou Tsurugi

Taiki's classmate. After losing to the then-amateur Taiki at a kendo championship competition, he has been tailing him ever since to settle the score. He proclaims himself to be Taiki's eternal rival. An exceedingly sensible person, he insists on troublesome things like how etiquette in a duel should be properly implemented. Because of this, Taiki feels awkward around his presence, and Akari very obviously tries to chase him away. On the other hand, he grows familiar with the enemy's mentality and becomes a supporter for the good-hearted Taiki and Digimon. His parent runs a mechanic-type business. Thanks to this, he is knowledgeable about machines and does repairs to Ballistamon.

Source: With the Will Forum Topic