Moto Saikyou Yuusha no Saishuushoku

Dan was once considered powerful and courageous in his youth, but years of laziness left him as an aging, unemployed man who is also divorced. To survive, he takes on quests for income, though his advancing age has weakened him. He is approached by a silver-haired elf, an attractive man, and a top-tier adventurer who is young by today's standards.