Demon Forbidden: the Retired Demon God Lives Next Door to Kamijou Touma

[Magic Forbidden + Super Cannon + Hidden Identity] Five years ago, I eliminated all traces of my magical side. Forge your identity, seal your power, and enter Academy City as an ordinary student. My requirements are simple: three meals a day, graduation on time, and no trouble. But——Why does Kamijou Touma live next door to me? Why do I run into Misaka Mikoto and her electromagnetic gun when I go to the supermarket to buy instant noodles? Why does Shokuhou Misaki look at me like I'm looking at a bug? "That... Mr. Chu next door forgot his key again? Come in and sit down." Kamijou Touma greeted warmly, holding up the key. I just smiled and walked into his house to eat. Index stared at me for three seconds and suddenly said, "You smell like magic." … Is my seal loose? ——Let me tighten it again. You didn't notice anything, right?