Naoto Tachibana/Synopsis

History
Naoto is being bullied by some guys, however, Takemichi Hanagaki manages to chase them. Takemichi gives Naoto advice to be more confident and not back down, which will scare off the half-assed punks. Learning that Naoto is Hinata's little brother, Takemichi tells him to take care of his sister and reveals that on the same day in 2017, he fell into the train tracks and ended up 12 years in the pat. He reveals that on July 1st, 2017, Hinata and Naoto will die, so he must remember that date and protect his sister. Naoto takes this seriously and Takemichi then shakes Naoto's hand.

Toman Arc
Naoto saves Takemichi from the train track incident. As Takemichi awakens in the infirmary at the station, Naoto reveals that Takemichi had time traveled and had changed his fate and in return Naoto managed to save him. Naoto reveals he studied really hard and became a police officer, however, he still wasn't able to protect Hinata, who still died. Naoto then asks Takemichi to help him save his sister and Takemichi agrees.

Naoto explains that his power is time travel and he is able to jump on the exact same day but 12 years ago. Takemichi spends two days without sleep in Naoto's room, where Naoto gives him all the information he had obtained about Tokyo Manji Gang and wants him to remember it. Some of the information he is giving him, is not known to the media as his predecessor managed to obtain it while was investigating undercover, but after he was discovered, he was killed. They found a video recording of his death in his eye socket. Naoto kept requesting transfers until he was finally transferred to his predecessor's position six months ago.

As Takemichi can't go back on any date he wants, Naoto tells him that when he gets back 12 years ago, he needs to meet the Tokyo Manji Gang top two members: Manjiro Sano and Tetta Kisaki. Naoto states that if those two never met, the current Tokyo Manji Gang would never exist and his sister wouldn't have to die. Takemichi wonders how he will go and Naoto mentions that Takemichi told him he went back in present after handshaking Naoto and he believes that's the trigger. Naoto informs Takemichi that Manjiro and Tetta met in August and he must stay close to one of them and prevent them from meeting. They shake hands and Takemichi time travels 12 years ago.