He's My Fiancée ! : I Went Back To The Past and You ! - Chapter 370 - 371: Little Brother He Doesn’t Know-II

In the middle of a deserted island, a small boy wakes up with two sets of memories: one from his few years of life and the other from a man who lived to adulthood and achieved great things. When he least expected it, a powerful master appeared on the island and took him in as a disciple, revealing a shocking fact: magic exists in that world, and, thanks to it, humanity managed to conquer the galaxy.

Qin Yi was reborn half a month’s time before the apocalypse. In this life, having already seen the true colors of her scumbag sister and father, she swore to let them have a taste of their own medicine—an eye for an eye. She disguised herself as a man and kept improving, getting stronger day by day. Common people hailed her as «Prince», making countless people bow in homage.

This is a fan work of “Magic Forbidden Book Catalogue”, and some settings of “Puppet Circus” are added at the same time.

A traveler from a circus enters Academy City to study and live as a puppeteer; at the same time, he secretly fights against the enemies who keep coming to seize the original magic book in his hands, and protects the safety and peace of Academy City by the way.

…The Third World War? Does the mainland dare to call it “World War” without playing?

- Description from novelbuddy

To correct the mistakes of his past, a young man is forced to narrow the space between science and witchcraft, as he ventures on a quest to save his world from complete destruction.