This story is mediocre, neither particularly good nor bad. If I had to pinpoint an issue, it would be the protagonist's personality—it’s honestly terrible. It’s no wonder he got betrayed, or if he didn’t, his insecurities about himself certainly make it seem inevitable.
The AI's name being "World" is just ridiculous. If you can’t come up with a good name, just use Google or something generic like that. And asking it to call him "S"? That’s just absurd and makes the protagonist look foolish.
Speaking of the protagonist, his personality is completely trash. Why is he in the DC Universe when he should be in the Overlord world? Furthermore, he could use his unlimited money to create something beneficial for the people in world he’s in before leaving, but I get the impression he’s the greedy type who wouldn’t give a single cent because of his insecurities. It’s frustrating to have such an annoying main character.