Keisuke Baji/Synopsis

History
As a child, Baji was close friends with Mikey. Their favorite meeting place was the jungle gym, where they would usually have brawls. Mikey claims that he always won those bouts. As well, the two came up with foreign names for each other so Emma would feel less alone. Mikey named himself Mikey, a nickname which is still used to this day, while Baji named himself Edward.

As he entered middle school, Baji became one of the founding members of the Tokyo Manji Gang. He stood beside Mikey, Draken, Kazutora, Pah-Chin, and Mitsuya.

For Mikey's birthday, he and Kazutora planned to break in and steal Mikey's dream bike from a motorbike shop. Mikey always rode around on a Moped which was ridiculously slow compared to their bikes, which other gangs often made fun. This resulted in Mikey kicking it and breaking it in annoyance. Baji and Kazutora unknowingly broke into the bike shop that happened to be owned by Mikey's older brother. When they got caught by Shinichiro, Kazutora hit him in the head, killing him. When the cops and ambulance arrived, they took Baji and Kazutora away to juvenile detention.

Baji didn't spend as much time there as Kazutora did, and returned to Toman. He often told Mikey to forgive Kazutora.

Sometime during middle school, he became friends with Chifuyu. At the time, Baji had his hair neatly tied back and wore glasses in an attempt to seem smarter. In reality, he had trouble reading basic words and writing kanji. Chifuyu appointed him the nickname "poindexter." The two quickly bonded and became close friends.

After Kazutora was released, he and Baji joined Valhalla, earning themselves top ranks. Baji entered to gain more knowledge on Kisaki, and never had full intentions of leaving Toman or betraying them.

Moebius arc
Baji arrives with the rest of the Toman members to support Manjiro Sano and Ken Ryuguji in their fight against Moebius. Excited, he ties up his hair and prepares for the fight. He easily defeats multiple Moebius members, showing off his strength.

Valhalla arc
Baji leaves Toman under the guise of wanting to transfer to Valhalla. In reality, he is infiltrating Valhalla to find more information about Kisaki, as Baji does not trust him. To show his "loyalty" to Valhalla, he even goes so far as to beat Chifuyu, one of his closest friends. Chifuyu holds no hard feelings against Baji, and even tells Takemichi that Baji is only in Valhalla to spy on them. Chifuyu knows Baji best, and knows how he always takes things on by himself.

The night of Valhalla versus Toman, Baji was stabbed by Kazutora. While it was not immediately fatal, the blood loss led to him fainting and appearing dead. Enraged at the apparent death of his friend, Mikey fights Kazutora with full intention of killing him. Before things could escalate that far, Baji stood up and stabbed himself, claiming that Kazutora would not be the one to kill him. In his final moments, he told Takemichi to watch out for Kisaki, and to take care of the ones he loved. He died in the arms of Chifuyu, thanking him for everything.