Height 194 cm (6'4") He has the record of 20 consecutive cardfight wins.

Spoiler

it is revealed that "Danji Momoyama" was not his real name, he was a member of the Minae family but after an incident that involved his sabotage of Mirei's arranged marriage, as her fiance simply wanted to exploit her, he was disowned from the family and he changed his name.