Jaku-chara Tomozaki-kun - Volume 1 Chapter 6 part3

A person with a strong thirst for knowledge traveled to the future five hundred years later. There are cities sailing in space, aliens with technology far beyond the earth, and monks based on spiritual power.

After waking up in a frozen city, he found that he had suddenly awakened spiritual power, and he also brought a world of “StarCraft” with him!

the

- Description from novelbuddy

Kyle woke up in a land of fantasy and magitech. The usual 'I died and woke up' bullshit, skip all that.

Except he used to be a crime lord, and society here is missing that extra kick.