Mazakon

This is a psycho-love story that begins with the encounter between a shy high school girl, Mana, who is inconspicuous in class, and a new art teacher, Sakurada. Sakurada became a hot topic among the students, and Mana also has a crush on him. Mana feels like she's floating when Sakurada praises her face with her glasses off, saying, "Try using contact lenses." However, Sakurada seems to hide a secret..

(Source: natalie.mu, translated)