All of Ichi Ni San's Novels

The Principle of a Philosopher by Eternal Fool Asley
Author:Ichi Ni San
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    When he was young, he had failed at the Magic Academy and was looked down by others. However by chance, he discovered a mythological medicine, so he obtained an immortal body. In order to get revenge on the people who made fun of him, he began researching magic and magical artifacts different from the academy. After 5000 years of research, he has become an ancient magic user before he noticed.  The people he was seeking revenge were long gone, losing his purpose, Asley went on a journey to see