Moto Saikyou Yuusha no Saishuushoku summary:
Dan was the "strongest hero" when he was young. However, because he has lived lazily, he is now a good old man who is unemployed! I tried to make money with quests for my life, but my physical strength was not good because of my age! It was a terrific young man who was a silver-haired elf, a handsome and S-rank adventurer, who called out to him!