MTL - Don’t Confiscate My Citizenship - Chapter 1 That’s it for now, let’s eat first

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

In a world teeming with Titans, Colossals, Gigantic Monsters and Kaiju's, Erian who reincarnated makes his living collecting scraps of low-grade Defective Genetic Serum, realised he transmigrated along with his system.

Follow Erian as he grows to become the strongest Disaster Grade Titan with the help of his Titan System!

This was a fragmented and disorganized world, this was a place that had been forgotten.

That day, was the most frustrating time for Ning Cheng, when on that day, he was abruptly brought here.

Because this world had Ning Cheng, who would imprint his name in the vast heavens, it would finally shine in the endless universe!

- Description from Novelupdates