Kamigoroshi no Eiyuu to Nanatsu no Seiyaku - Chapter 12 Hero and the City of Magicians

19 years old Davi, married a stranger whom she never seen at all to save her little brother. Until she found herself being bound with a certain mission. Her mission is to seduce her stone cold husband who is never romantically interested in any human being and bear his child. ____ Current Editors/proofreaders: kraycee, lov3lamb, iamconi789 Donations: https://www.paypal.me/kazzenlx

Calamity descends upon a a tranquil world in the black of night, transforming it into a death game! This a a true apocalypse, but this is not the end of humanity!

- Description from Novelupdates

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

A back-to-basics(?) monster evolution novel.