(I'm out of stored chapters and stuck on the story...)
Boss Becomes Lover
Cheng Jue and Li Yin were both diligent bosses in an instance world. Cheng Jue was the final boss, while Li Yin was a minor boss under him. Every day, Li Yin's job was to send challengers who came for Cheng Jue packing, then clock out once the task was done.
Then one day, an unreasonable, overpowered player showed up. After beating Li Yin, they didn't go challenge the final boss, but instead came back to finish him off. Li Yin never expected he was about to die, but the final boss, Cheng Jue, simply tossed the player out of the instance.
Cheng Jue couldn't bear to let Li Yin, the loyal subordinate who had served him for years, die like that. Using his authority as the final boss, he sent Li Yin's soul out of the instance. Li Yin survived in the real world as a human child.
The two will go through several instances first, so Li Yin can regain his memories. The final instance is the one where they were both bosses.
Also known as: How a single-celled organism completes its evolution in a day and becomes a mammal.
Eight-year age gap, both have only ever been with each other, straight-to-gay. (The love interest has many identities, but their memories may not be shared between them.)
Theme: World peace