Watashi no Koi de Shindekure

Yumi Katagiri (a pseudonym) is a high school girl who does a bit of compensated dating on the side. But her "customer service," is a little bit different from other girls'... She would continue this behavior night after night until one day she is discovered by her high school teacher. A unique romantic suspense between a lonely girl and a passionate teacher!

(Source: Kodansha, translated)