During the shocking conclusion of AI: The Somnium Files - Nirvana Initiative, you’ll discover the truth behind the Half Body Serial Killings Case and prevent Tearer’s cult from spreading the TC-Perge virus into the world. As things are wrapping up, you’ll receive one last message from a hologram of Tokiko, the now-deceased head of Naix and the presence behind many of the game’s events.
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This final message from Tokiko contains within it a hidden code: a ‘nil number’ that can be used during a replay of one of the game’s earlier sections to unlock a brand new timeline of events. This new chapter also unlocks a bonus somnium that references creator Uchikoshi’s earlier puzzle game Nine Hours, Nine Persons, Nine Doors.
After finishing Ryuki’s route and progressing through Mizuki’s route past the Chapter 5 Amame Somnium, the game’s story will begin to conclude. In the section labeled Epilogue, you’ll get a chance to speak to all the characters you’ve met along your journey.
At the very end of this, you’ll have a chance to speak to the hologram of Tokiko. They’ll demand that you guide them to Moksha. This is the point where they’ll tell you a ‘nil number’ that you’ll need to write down or take a screenshot of, as you’ll need to refer back to this in a moment.
After the game concludes, load a save and head back to the first time you met Tokiko at Naix headquarters during the first chapter of the Ryuki route. You should be able to select the Naix headquarters as a location that you can immediately teleport to.
Once you arrive at the headquarters, you’ll need to progress through the dialogue with Tokiko about Naix’s philosophy and origins.
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