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. This project resulted in the creation of the Ignis.