Doomsday Wonderland - Chapter 1403: An Unfalsifiable Psychological Problem

After an unexpected death, a soul finds itself reincarnated into the body of Itsuka Shido, an ordinary teenager in a world filled with powerful spirits, magic, and dangers from other dimensions. With the help of a mysterious system integrated into his body, Shido gains the ability to travel across worlds, summon legendary anime characters, and unlock a wide array of random skills and abilities.Disclaimer: The cover isn't mine, credits to the original artist.

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

Unrivaled Spear Knight.

The stereotype that knights must use swords is broken by the brightest star of a duke’s family. The hero that brought an end to the empire’s civil war. The name of that person is Joshua Sanders.

Despite his reputation of being called the empire’s unrivaled spear, he was bleeding dark red blood. Not just anyone but by the hand of his own emperor, Kaiser… “Kaiser! Don’t think it will end like this!!” Moments before death, incurred by magic circle, the spear that spent its years together with him, ‘Lugia’, started to emit an enormous amount of energy…

This familiar place, it can’t be… the stable that I used to live in when I was young?

My body became young?! Lugia, what the hell are you?

Joshua returned to his younger self. His ultimate revenge starts here!