A brief description of the manga The Principle Of A Philosopher By Eternal Fool “asley”:
Like many stories of impaired pride, this one begins with the young wizard Asley being cruelly ridiculed due to his failures while studying at the Magic Academy. Leaving magic in the past, he devotes his life to alchemy. And his perseverance was rewarded.
And while the acquisition of the elixir of immortality was the result of chance, but still it gave him the opportunity to live forever, improving in science and magic.
Centuries and millennia have flown in research. Having achieved power, after 5000 years, Asli was ready for sophisticated revenge, but later realized that there was no one to take revenge: everyone who humiliated and mocked him for a long time in the grave.
Then the immortal wizard decides to hit the road in order to reacquaint himself with a world that he has not been interested in during these years. A faithful friend of Pochi goes with him. Will this journey be easy and what surprises will it present to the proud recluse and his comrade?