I Was Dismissed from the Hero’s Party Because They Don’t Need My Training Skills, so I Strengthened My [Fief] Which I Got as a Replacement for My Retirement Money

Story:

This feeling, in fact, that I (27 years), who specialized in abilities [Training], is no longer necessary for the unit of the Hero, which has become more powerful in a concrete way. At first I was the center of the party, but in the end the Hero drove me out of the party. However, because I "have made a great contribution to the party so far," I received a small "feudal" in exchange for my pension funds. When my heart felt alone, leaving the adventure front line and heading to my own land, I thought about something, seeing 7 villages with their 2500 inhabitants. My thoughts are proper … Curiously, in case I teach these people, will my land not be strong enough to win, among other things, the Lord of demons?