The professor and the wicked beauty

Jefferson was a twenty-nine years old man whose overachieving efforts to cure his mother didn't bear any fruit. He lost the sight of life and lived routinely with no aim. On one night of drinking, he received an offer from a monster. "You let yourself wither away in this hole. Swear an oath to me, and I'll restore your mother and your will." Remembering the smile his mother, and the face of the love he let go years ago. He didn't think twice and swore to do whatever it takes. Thus started his journey as a teacher and a hunter. He led his pupils on battles through the cosmos, as the wicked beauties followed and pursued him to the end of the universe. NOTE: This isn't an erotic novel, but when there's sex, it'll be somewhat explicit. I'll warn so don't worry.