Tree of Aeons - The True Power of Heroes

Dying in a tragic accident Marcus Ferrous gets transferred to a fantasy world of monsters and magic, except when he arrives contrary to what he expected he is now level one and a ghost. Left with nothing on a strange new world, Marcus will struggle with everything he has on his journey to get stronger and uncover the secrets of his new world.

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

I, Rorschach, the god of the world, the most powerful Kryptonian, the leader of the Justice League, the founder of the Emperor Organization, the gravedigger of countless civilizations in the multiverse, the most handsome man in the world, there is no one!

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PS: The non-standard MCU universe can be regarded as a similar parallel universe. The timeline is based on this book, first Marvel Universe, then DC, X-Men…

- Description from novelbuddy