After Defeating the Devil, I Just Want to Live a Peaceful Life

The hero who defeated the devil and saved another world, but after peace, he just wants to return to his original world and live a peaceful life? But why do we encounter all kinds of incidents as soon as we come back? The girl carrying the "curse", the special agent who came to visit, the inhuman child picked up... Why do every incident revolve around me? Where is my peaceful life? ! … (The article is about daily life, and it is based on an imaginary world. If you think there is anything that is not in line with common sense, please don't worry!)