Kyoji Tachibana

Kyoji Tachibana is known as the coolest and most talented kid at Reiji's school. He is an excellent Dragon Drive player who wants to challenge Reiji himself. His dragon is Air Blast.

About
Kyoji is 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.

Kyoji 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.