Chanto Suenai Kyuuketsuki-chan

Luna Ishikawa was a young vampire transfer student. She has a mysterious personality that draws everyone’s attention. Everyone in the class was impressed with her calmness and charm. An ordinary student, Tatsuta Ootori, wanted to talk to her, but he seemed to think it was impossible. 

One day, they paired up to clean the class after school. He got to know about Luna, and then he knew that she was not even good at sucking blood like a vampire. To help her, he became friends with her and gave her practice daily, one bite at a time.