He was also able to deduce that Kai was the cause of the growing chain of the Reverse fighters, despite hoping that he was wrong. When Kai returned to Japan after travelling around the world following his Reverse, Miwa confronts him, having learnt of cardfighters suddenly becoming strong and gathering more into their group worldwide from the net. He later faces off against Misaki during the regional qualifiers, using his deck full of Seal Dragons, but falls short of defeating her. During his fight against Shingo, Shingo underestimated Miwa's skill and Miwa manages to wipe him out easily. Miwa was left behind in Japan to look after Card Capital with Izaki as the Acting Shop Owner during the Tournament Period.
There is no character reason for this like there is for Kai, however. Like Kai, despite continuous reference to 'Miwa' both in-series and out even by friends, Miwa's given name is in fact Taishi. Unlike Kai, he's much nicer and friendly to people, and loves to joke. (However, this plot seems to have been amended in Neon Messiah, with the appearance of another childhood friend, Kouji Ibuki.) He understands Kai and plays Cardfight with him.
He is a friend of Toshiki Kai they have been friends since they were young and he is Kai's only friend.
