Samsara Online - Chapter 1 Samsara Online

As a boss with space plant abilities in the apocalypse, Lu Yao once traveled to the future, became the director of a nursery school that was about to close down, and became a rare animal human on the verge of extinction.
The food she made at random can cure the genetic disease of the cubs in the welfare home. She punched the cubs’ scum fathers and scum mothers, and kicked the remarried families who abandoned the cubs.
It is such a good kindergarten successor dean, who is attracted by that single cool imperial marshal!
Since then, the barrage in the live broadcast room has become:
Imperial Citizen A: Dean A, I really want to marry.
A certain big black dragon: Shut up! This is your marshal’s wife!
CP: Dean Lu Yao, who is extremely protective of short-sightedness and loves cubs, X the imperial marshal Helanjia who loves Shang Yunxi more than cubs
Brief: There are no bad cubs, only bad big ones.

- Description from novelbuddy

Imagine being murdered on your way home to your girlfriend, only to have your soul stolen and handed over to the Demon King as an offering for goods. Could it get any worse?This is the story of a man cursed with a skeleton body, now working alongside the Demon King to unravel the mystery of his new existence. As he navigates this dark new world, he discovers the twelve universes that govern humanity, encountering both allies and enemies along the way.Struggling to regain his humanity, he must master his newfound powers and survive the dangerous politics of the 12 universes. Can he uncover the truth behind his transformation and reclaim his soul, or will he fall to the darkness threatening to consume him?

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

- Description from novelupdates

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.