The Oni also gives Jacques a spirit named Ako to assist him in his quest. Upon arriving, an Oni spirit grants him powers in order to assist him on his way to Honnō-ji Temple in Samanosuke's time. However, Philippe dies of mortal wounds from the previous battle after the time warp. Jacques Blanc and Philippe arrive in 16th century Japan. Guildenstern explains that he developed the technology to enable himself and his fellow Genma to travel through time to conquer the future. Across his fights, Samanosuke briefly meets an old enemy: The Genma scientist Guildenstern. Samanosuke then meets Michelle Aubert, Jacques' girlfriend, near the Arc and makes his way towards the roof.
The time portal reappears and pulls Jacques and Philippe through to feudal Japan. Samanosuke awakens in Paris in the year 2004 where he aids a man named Jacques Blanc in fighting the Genma army that has begun its invasion near the Arc de Triomphe. Though Samanosuke defeats Nobunaga's ward Ranmaru Mori, he ends up being pulled through a portal that opened below him. Having returned from mastering his new found abilities as an Onimusha, Samanosuke Akechi returns to battle the Genma army in Japan 1582 as he fights his way to Honnō-ji Temple to finally put an end to Nobunaga Oda.