Arifureta Shokugyou de Sekai Saikyou (WN) - Chapter 21 — The Guardian of the Depths

[New Hit Book] The king mysteriously withdraws, and just when everyone breathes a sigh of relief, they are unaware that an unprecedented storm is about to unfold!

Su Yi has played many vicious female supporting roles such as a mistress, a witch, a villainess, and what not, earning the title “national bad woman.” receiving quite a few haters.

She then fell in love with a veteran who had NO. IMPERFECTIONS. AT. ALL! (Su Yi said in all seriousness). It was just that he wasn’t quite pleased with her reputation….

Therefore Su Yi ran back to the company, crying. “I want to change my public image! I don’t want to be a villainess anymore! I want to play a white lotus flower, it’d be great if I could be the wife of a soldier who would sacrifice everything for love!”

Even so there was one thing Su Yi was certain about right from the start.

Chu Ying was hers, no objections allowed!

A fluffy, sweet modern GL story about a mature older women and a cute university student.

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

- Description from novelbuddy