The Case of the Inhuman Girlfriends: Serving My Vampiric Student

A world where humans and the inhuman live together.
The protagonist, a brand-new teacher named Keiju Tsukimoto, takes charge of the class that the vampire girl Mira Kurojuji attends.

Mira is always alone in class, so Keiju starts to worry about her. As they talk every day,
Keiju starts to secretly harbor feelings for her, finding himself more and more drawn to her.

But he is a teacher, and she is his student.
He laments the taboo nature of his love.
But one day... something happens to him.

"Mira, I like you, teacher. Let me hear your feelings, teacher."

After school, she drinks his blood against his will, making him unable to resist telling her how he feels.

"Then, you and Mira will become lovers, right? I love you, teacher...♪"

Through the power of her crimson gaze, the two end up dating.

Through his relationship with a vampire whose worldview differs entirely from his own,
Keiju learns pleasure that surpasses human comprehension.

[From dlsite English]