My tutor Mahiro is a serious student with excellent grades. But he is a troublesome student who always tries to seduce me even though he knows I have a girlfriend. I usually brush him off, but today the mood is different. "Teacher... Your mother won't be coming home today," I whispered, and he smiled happily and suddenly kissed me and licked my face! I was confused, so he opened his legs and showed me his panties. Then he started masturbating and began to provoke me in earnest...