[Two Male Leads]
(One-on-one romance, a variety of character types, both protagonists are each other's first and only love)
(Some angst, happy ending)
To live a good, happy life, he was forced to carry out missions for a system.
Yu: You lousy System! You're not even human!
Some System: I wasn't human to begin with. [Smug expression]
World 1: A sweet little campus romance
World 2: The fragrant, soft, drama-loving prime minister
World 3: An insignificant nobody in a cultivation arc
World 4: The fake young master of a wealthy family falls for me
World 5: A deity who covets Xin Zi
World 6... World 7...
In every world, it was him. In the end, Yu Simao couldn't help falling for his tenderness. Even when the worlds changed, his heart kept beating for him.
At last, after completing his final mission, Yu Simao returned to the real world as he had wished. He had once hoped for a happy life, but now he wanted to wish for one thing: to meet that person again.
System: Congratulations on completing the mission. Your wish will come true!
(The first and second worlds aren't very well written, so please don't criticize them. You can skip ahead to the later ones. Since I updated this book over a long period, the earlier chapters may not quite keep up with the plot.)