Hello, could anyone offer some opinions over my story?

https://www.webnovel.com/book/16759993005135805

It's my attempt at making an isekai. (Sorry for being cliche)

It's about two kids.
One is a servant boy who is trapped and forced to fight for all eternity until someone can free him from his contract while the other is a lost girl trying to find her way home while surviving in this world.

People would comment on every chapter but one day i pressed the "completed" button by accident and suddenly everything went silent.
I also don't mind doing review swaps but i tend to give harsh criticisms though.

    https://m.webnovel.com/book/16956677606053005
    The most powerful being dies and reincarnate
    in his body on Earth.

    After the great battle against his archenemy,
    A powerful being pays a huge sacrifice to save his world. His action leading to the utter destruction of his physical body.

    Through a mystical encounter and a great coincidence his soul returns back to his comatose body on Earth, years have passed since that day.

    The powerful being ended up becoming a 24 year old Neet, playing games day and night, eating junk food, drinking Cola while leeching off of his wealthy parents money, until meteorites smashed into the world causing devastation and bringing with it a deadly virus and opening up spatial portal to another world.

    He shall once again pick up his weapon, slaying monsters and devils, meeting old allies and their grand child's, but hey wait why the hell is my tummy stuck at the house front door.

    he takes out his phone from his 5XL trousers and googles, "what to do when your body Fats is stuck in the front door of your house"

    Anyone wanna Review swap

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