Both he and Yusaku were involved in an incident 10 years ago. It is currently unknown what happened to him but he suddenly disappeared prior to the start of the series. This event drove Yusaku to fight for him, and defeat the Knights of Hanoi so that Yusaku might save him from darkness
He has been mentioned several times by Yusaku Fujiki and Shoichi Kusanagi, who are fighting Hanoi in order to find him. After Shoichi discovered the true identity of Blue Angel who is Yusaku's classmate and step sister of SOL Technologies Security Manager Akira Zaizen Shoichi suggest Yusaku to meet her so that he can get a lead on Akira reagarding his whereabouts and Yusaku's stolen memories but he doubted the plan would work due to Yusaku's poor social skills with womens.
- ↑ Yu-Gi-Oh! VRAINS episode 3: "First Contact"
- ↑ Yu-Gi-Oh! VRAINS episode 2: "Seize the Wind! Storm Access"
- ↑ Yu-Gi-Oh! VRAINS episode 1: "My Name is Playmaker"
- ↑ Yu-Gi-Oh! VRAINS episode 6: "Idol!! Blue Angel"