MTL - Spending the Villain’s Money to Extend My Life - Chapter 10

Echoes of the Lost Elf – Back Cover SynopsisA legend long forgotten. A war long past. A magus who vanished into history.A thousand years ago, Historias Everglen, the greatest magician to ever walk the earth, mysteriously disappeared after leading the world to victory in the First War against the Void. The high elf, creator of Castellas Academy, the most prestigious magic institution, faded into myth—his name spoken only in whispers, his fate unknown.But history does not stay buried forever.When a group of young students, lost in the Everglen Forest, stumbles upon an enigmatic figure in the heart of the ancient woods, they unknowingly awaken an echo of the past. Unrecognized, Historias decides to return to his own academy—not as its master, but as a student. Beneath his youthful guise lies an immortal being who has spent a millennium mastering magic, swordsmanship, and alchemy in solitude.As shadows of the Void begin to stir once more, the world stands on the brink of another catastrophe. Enemies rise, secrets unravel, and forgotten legends take their place in the present. But one question lingers:Will the world recognize its lost protector before it’s too late?

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

An Individual from Earth finds themselves in the Shinobi World, equipped with a Scientific System. From that moment, he delved into scientific research far ahead of its time.

Waking up, Kim Hajin finds himself in a familiar world but an unfamiliar body.