Neko ni Hakuchou, Hotaru ni Koban

Art teacher Hotaru Hase is confounded by one of her students, Yuna Nekome. Yuna has fallen in love at first sight with Ako Shiratori, a part-time teacher at the same school, and is constantly pursuing her. However, Ako has a quirk, the depths of which are yet unknown. A student hopelessly in love and the adults around her getting yanked around. A new and vibrant work by Yodokawa that plays out with the school as the stage!

(Source: Kadokawa, translated)