I read 6 different new Manga titles today all around adventuring and this one is just a decent title. Yes it is Isekai but the MC is only from the magical world and not earth. Strongest Lonely hero who spent his life to defeating the Demon King who simply seeks to live a low profile life as a tamer. It's not bad, I actually like how its turning out. The MC may be a bit stiff but that's just his way of navigating through the world a century later. He keeps his strength in check while sticking to his good values for the sake of a peaceful life.