My Simulator Can Level Up

Li Fan transmigrated back to the time just after he graduated

and awakened the Marriage Simulator.

But he couldn't help feeling the simulator was messing with him.

Otherwise, why would it upgrade after only two simulations?

What? Monsters are attacking the city?

He'd barely managed to deal with the monsters,

when divine beasts showed up too.

And why, in every simulation, was his wife the one carrying him? Simulator, are you trying to hint at something?