Kyouji Tachibana

Kyouji Tachibana Known as Reiji's best friend, he is an awesome Dragon Drive player who wants to challenge Reiji himself. He is impressed with Chibi's abilities. He is also the champion of A Block. Kyoji and Sayaka are seen together often; after growing suspicious of RI-ON and the game of Dragon Drive, they sneak into a room containing a dimensional portal machine owned by RI-ON and use the machine to enter Rikyu. Kyoji fights alongside Sayaka and Mukai in the Dragonic Heaven and then helps Reiji and the others in the fight against RI-ON. He is the one who finds an old feather that once belonged to Raitonaitsunaito, which not only implies that Kohei has been in Rikyu in the past but leads to Mahiru finding out that Kohei was the one responsible for the death of Yako, not Rokkaku. Towards the end of the anime, Kyoji makes a suggestion to Sayaka in which he will go out on a date with her after the two worlds are saved.