Actually cool. Love the protagonist and the romance. A protagonist that trained for a 100 years but didnt retain his youth and set out on a journey building a harem like the rest of all that slop. Hope the author doesnt ruin It by dragging It on and ruining the pacing. Only thing that makes me mad is him not considering someone that has the same name, and acts exact the same as his childhood friend could be said person, like come on youre 100 years old, would It hurt to waste 2 seconds and ask If shes the one? Im worried this will be insanely and annoyingly dragged, he met with his childhood friend and is on par with the demon king so there isnt much to do, which means they will make alot of nonsensical problems arise to drag this out longer. specially since It will grow popular quickly i bet. Im usually not all in for old main characters but this one gets a huge pass