机战:从高达OO开始
Yang Hui, who inexplicably traveled to the Gundam OO world, became a child and a member of the [Barren Bear] family.
With the monkey version of the system with countless flaws, Yang Hui is determined to change all the regrettable tragedies.
However, when he thought everything was over, he discovered that it had just begun.
(PS: Infinite Streaming, there will be spin-off characters and mechas, but it will focus on the main story. The early story will focus on Gundam, and the super system and fantasy system will be added later.) There are multiple female protagonists, and there are some magic changes.
https://www.69shuba.com/book/48474.htm
ongoing 695 chaps