Suugaku Girl – Fermat No Saishuu Teiri

i love math. just after the high school entrance ceremony, i meet a beautiful girl: milka. milka is a mathematical genius. she gives me many math problems, she shows me many elegant solutions. milka and i spend a long time by discussing math in the school library. one year later, i meet another mathematical girl: tetra. tetra is one year younger than me, and asks me to teach her math. while i teach her, she begins to understand math and to love its elegance gradually. the second series is about pythagoras theorem, elementary number theory, group, ring, field, and fermat's last theorem.