No, You're My Teacher! -Lust Causes Him to Transform!?- Hana Kadoma is secretly in love with the librarian, Mr. Kai. Although it's a hard, boring job that nobody wants, Hana starts volunteering at the library so that she gets to spend all her time with Mr. Kai. One thing leads to another and Hana ends up admitting her love to Mr. Kai and kisses him. With that, kind and gentle Mr. Kai changes into a monster! Squeezing her from behind and knocking her to the ground...! Just as Hana thinks she's got what she wants, another girl shows up... From a cell phone novel to a popular romantic comic!