God of Money - Chapter 12:

The waves ripple around me,calling me in a whisper,Into the deepest part of the ocean.As I walk on the soft sand,the water sweeps over my feet,surrounding where I stand,giving me the sweetest sensation.Oh ocean,why do I feel so attracted to you?Why do I feel the tickling of your whispers?As it causes cold shivers down my spine.I could hear your gentle lullaby,It roars like a lion, yet so steady and honestJust like a refined diamond.Oh, sea, why do you call my name in a whisper?Caressing waves upon the shore,Once again you beckon me.Why do you show yourself at my doorstep?Why do I feel your presence everywhere I go?Why do you call me so desperately?I want to know, cause when the sea calls?Who will answer?

Reincarnated without memories, given a second chance as a chimera with a limited lifespan. Leon struggles through his strange new life. He attempts to improve his dungeon and evolve himself to live longer and become the strongest Dungeon Master—no. The Dungeon Overlord.Helped by his Dungeon System: the mysterious Ifrit, Zafira a Level 100 Succubus Queen, and his band of trustee goblins. Leon aims to overcome his limits, survive and reach the pinnacle of the world. Whether through trade, domination, or tricking the hero's beautiful party members into becoming his private mercenaries.Leon will face the weakest and strongest beings in the magical world of Umbra and surpass all!

After experiencing heartbreak from being abandoned, he enlisted in the military.

And then, he became a war hero.