Ken Ryuguji/Synopsis

History
Draken was born in Shibuya's red light district. He never knew his father, and his mother was a prostitute who abandoned him at birth and died when he was two years old.

He got his head tattoo in fifth grade and called himself "Draken" from Fourth Middle School. He became a bit famous and feared, but was no match for Sameyama's middle schoolers crew. As they had beaten him, he could not deny their orders. One day, they told him to bring "Mikey" from Seventh Middle School, as he also was getting cocky like Ken. Ken went looking for him and was excited that he might even fight him, but was surprised to see how small Mikey was. He told him that some middle schoolers wanted to bring Mikey to them and Mikey agreed to go. However, as soon as Mikey saw Sameyama, he jump-kicked him in the face and knocked him out, scaring the others. Mikey recognized Ken as Draken and wished to become friends with him.

He is also childhood friends with Mitsuya, whom he met before Mikey. Mitsuya and Draken have matching dragon tattoos, but Mitsuya grew his hair out to cover his.

Toman Arc
Draken and Mikey visit the fights organized by Masataka Kiyomizu. One of the guys introduces himself to Mikey, but Mikey ignores him and continues on, with Draken explaining that Mikey talks only to those that he is interested in. As Mikey passes Masataka, Draken kicks Masataka in the guts, telling him to bow more when he faces Mikey. Mikey takes a liking to Takemichi and declares they are friends. Mikey and Draken then disband the underground fight club, as it brings a bad name to Toman.

The next day, Mikey and Draken visit Takemichi at school. Draken beats multiple third years in the hallway as they irritate him, and then orders them to line up laying on their stomachs so that he and Mikey could walk over them. They want to hang out with Takemichi, but Hinata thinks they are there to kidnap him, so she slaps Mikey and attempts to leave with Takemichi. Draken stops her, but as she explains that she wants to protect Takemichi, Takemichi places his hand on Draken and tells him to release Hinata, as there are things he won't give up ever again, and asks them to not hurt her. After the situation is cleared and Mikey has no bad feelings, Draken tells Takemichi that he threatened him, but it's fine as protecting a girl is old school and not many good-hearted boys like that exist anymore. Mikey, Draken, and Takemichi then go out together, where eventually Mikey reveals his plan on making a new era of delinquents and wishes for Takemichi to be part of it.