[Two male leads, both powerful + rule-based mysteries + suspense, horror, and the supernatural + entirely fictional worldbuilding, all made up, so please don't nitpick]
“The train is about to depart. All passengers, please take your seats. The train will stop at each designated station for three days. For your safety, please board on time within those three days. No exceptions.”
Ye Li only wanted to take a trip, but he was dragged into an infinite horror world and targeted by a powerful man. The man was perfect in every way except that he had no sense of direction. With a mix of sweet talk and trickery, he got Ye Li to sign a contract. From then on, Ye Li somehow unlocked a host of unknown abilities and cleared one level after another, ascending to godhood.
Time and space suddenly fell into chaos. No one knew where the destination lay. The train was the only safe zone.
“My beginning and my end are both you.”
“Don't give up on yourself so easily. You may not realize it yet, but you've been trying to save yourself all along.”