Shikkaku kara Hajimeru Nariagari Madou Shidou!

Several weeks after Arcs Reytheft is stripped of his right to inherit the viscount title, he has an unusual dream. In this dream, he experiences life through the eyes of another man. This man lived in a world entirely different from Arcs' own. He was born into an ordinary family and met his end due to an accident. Upon waking, Arcs resolves to leverage these memories to refine his world's magic. His goal is to prove himself to his parents, who had always seen him as incompetent and treated him with disdain. Despite being the eldest son of a noble family, his lack of magical aptitude led to his disinheritance. This is the tale of his ascent in a fantasy world, where he utilizes the knowledge gained from the life he experienced in his dream.