My Civil Servant Life Reborn in the Strange World - Side Story 10. The Magic School and the Monster in the Basement (9)

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

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

Two Zatarian youths embark on a cross-dimensional journey to uncover their true identities, encountering both allies and formidable adversaries along the way.They must collaborate to decipher the significance of the symbol imprinted on them, but a faction known as the Nitharians seeks to eliminate them before they can uncover the truth. Naburo, the leader of the Nitharians, has dispatched his most trusted son and his team to guarantee the success of this mission.Will Naburo's son and his team prevail before the Zatarians discover their true selves?

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!