MTL - After Time Travel, I Married the Heroine and Her Brother - Chapter 25

In a world where martial artists reign supreme, strength is everything. Unfortunately, that logic doesn't apply to a certain Florida Man.

Refined in the nuclear fallout wasteland, Leo was the strongest mutant alive. He carried an alien artifact, allowing him to exchange his lifespan for modern items. After 50,000 years of solitary life in a humanless world, he collected enough lifespan to transmigrate to another habitable world.

Leo was later thrown into a mysterious planet. He soon discovered that his body produced radiation, and it mutated the surrounding plants and grasses. Worrying that he might ruin the beautiful planet, he chose to live in seclusion.

Unfortunately, the local population soon discovered his existence, and a misunderstanding ensued.

The whole world is subjected to a highly dangerous standardised exam called the Global University Entrance Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

- Description from Novelupdates

What the heck? She, a famous doctor from the 23rd century, turned into a village peasant girl of a different world!

What will happen if your ordinary life becomes not so ordinary? What will happen if your old existence becomes anew? What will happen if the world that you know is changing?

Our heroine, Anne, is a 40 year old librarian, that got entangled in mythical magic, inside a mysterious fairytale book. When the disaster happened, she got thrown into another world, the kingdom of Valorian, where magic and lore are coming alive. A world where she becomes younger again, but with a wisdom and knowledge of a forty-year-old woman.