Chapter 108 In-App Purchases in Reality

Level 4 Researcher 'Luo': "Argument 1: How does he know such detailed Demon Intelligence? Most of it has never appeared in 'Over My Dead Body,' so it's impossible for him to have analyzed it. Thus, the Demons must be from the future, and that's how he knows the Demon Intelligence."

That's because those pieces of Demon Intelligence are what Ren Suo obtained from playing other save files in 'Over My Dead Body'!