Tsuihou Yuusha no Yuuga na Slow Life: Jiyuu ni Nattara Ore Dake no Saiai Tenshi mo Te ni Haitta!

After suddenly being fired despite serving as a hero for 30 years, Alec was left with nowhere to turn. Orphaned from a young age, he had no parents to rely on, and having been a hero since childhood, he lacked basic common sense. With nowhere else to go, Alec ends up at an unexpected place, a slave market?