Yu Yuan accidentally entered a game. During his attempts to clear it, he met a clever, kind-hearted boy and a couple who had reconciled after breaking up. But the System's interference forced him to part ways with them, simply because God wanted him to become the successor.
[You are just as heartless as I am.]
He considered fighting back, giving up, and even taking the path of a villain. Only in the end did he discover that the way to make things right for everyone else was to wait, then strike back.
[System Notice: Player Yu Yuan has failed to clear the game and is about to become the System's successor.]
"God says, welcome to the final stage. This is a test that will decide who lives and dies."
Content warnings:
1. The author came up with this story on a sudden inspiration in high school. Half the stages are incomplete, and the author doesn't plan to fill them in, so it's going to be especially short. Think of it as a collection of ideas. If that's not for you, feel free to leave.
2. Two male leads, happy ending. If you insist on assigning top and bottom, Yu Yuan is the top. The couple name is Yuanyang.
The top uses his brains to clear stages when his teammates are around, and his life to clear them when they're not. The bottom rarely hurts anyone, but is both smart and strong.
3. The story focuses on the plot. Characters other than the leads don't get much page time, and the bottom appears in only 60% of the story. There's very little romance. The two barely ever confess their feelings, but both know they like each other and maintain a very delicate relationship. (No explicit content.) So even if this kind of story isn't usually your thing, you can still give it a try.
4. The top kills people, including players and NPCs. Don't be fooled by how pitiful he seems in the opening stage. He's somewhat world-weary and self-destructive.
5. The author is new to writing. Please be kind about the prose.