Mahoushi ni Noranai Ijin: Mueki na Kenkyuu da to Mahoushou wo Kaiko Saretatame, Shin Mahou no Kenri wa Dokusen Datta

Ein, a brilliant but self-taught mage, takes in an orphan girl, Shannon, and trains her into a successful mage - the condition given to Ein to continue his research. However, his new supervisor at the Ministry of Magic dismisses him anyway, because Ein lacked an academic degree. Ein is at a loss and worried about how to take care of Shannon. However, as he lives with Shannon and works with her, Ein finds a flash of inspiration to finally complete the research that will go down in the history of magic. The Ministry of Magic finally realizes what they had let loose, now they will do anything to seize the rights to the new magic...? (Source: Dengeki Bunko, translated)