Isekai-gaeri no Daikenja-sama wa Soredemo Kossori Kurashiteiru Tsumori desu

Saito was transported to another world at the age of 15, became a Sage, defeated the Demon King, and safely returned to Japan. He wanted to live a slow life in his hometown, but 19 years had already passed! While saving his former classmate Madonna, who is now a single mom, he was noticed by the maf