Lost Incident

The Hanoi Project (ハノイプロジェクト Hanoi Purojekuto), also known as the Lost Incident (ロスト事（じ）件（けん） Rosuto Jiken), is an event that occurred 10 years prior to the start of the Yu-Gi-Oh! VRAINS anime. Kiyoshi Kogami, a researcher at SOL Technologies, developed and executed the incident without the knowledge of his company.

History

10 years before the present, six children were kidnapped by a certain organization and went missing one-by-one. During those six months of captivity, the children were imprisoned separately in rooms with nothing but a VR equipment. They were forced to Duel in a virtual arena, and if they did not win, they were electrocuted and not allowed to eat.

After the children were rescued, the incident was covered up. In the aftermath of the incident, several of the children suffered from post-traumatic stress disorder, with some taking years of therapy to recover, while others have not recovered at all. Yusaku believes that some of the victims haven't been rescued yet.

The project's name is the main reason why Yusaku and Shoichi Kusanagi suspect the Knights of Hanoi had a major involvement in the incident and thus why they pursue them. Although during the duel between Yusaku and Revolver the latter at the very least confirmed his knowledge of what had happened, it is unclear what the participation of the group was, and to what extent, if any at all.

Victims

• Yusaku Fujiki
• Shoichi's brother
• four unnamed children