MTL - I Can Level Up By Staying Idle - Chapter 5 always cool

He is the ruler of the mercenary realm, an overlord that gives headaches to the leaders of any country! For the sake of his friends, he’s willing to sacrifice himself; for the sake of his family, he does not hesitate to spill blood! He is a dragon, one that soars above even the highest of heavens. He’s a power that advances triumphantly through unstable situations, stirring up both the winds and the waters.

- Description from Novelupdates

There’s a legendary Bishoujo Game that has become popular among Japanese gentlemen.

In a game-like world where dungeons, monsters, and players appear.