Itomusubi

Mizuki, a high school girl who is busy studying for the college entrance exams, gradually grows dissatisfied with her boyfriend, who insists on a "pure and proper'' relationship. She appreciates his sincerity of asking permission to just hold hands. However, she wouldn't mind taking things a little further, either. The frustrated Mizuki vents her dissatisfaction to her tutor. The tutor makes a suggestion,“Let’s practice first, to help you get ready for your boyfriend.”

The novelized version of the popular NTR story has begun!

(Source: Osiris Bunko, translated)