SONE-681 Tutoring My Boyfriend Ask for something in return.

SONE-681 Tutoring My Boyfriend Itoi Ruka Synopsis This happened because of her sister’s good hopes, who got a boyfriend who is good at studying, but she didn’t know that her boyfriend was also good at. Until when she offered her boyfriend to help teach her sister homework, but the good boyfriend taught her the wrong subject, so that her sister stopped studying and became addicted to sex instead.