Ouma no Arima-sensei

For Haruaki, a new nursery school teacher, Ms. Arima is a senior teacher. Ms. Arima is loved by the children, is reliable, and is respected, but she is also a huge horse racing fan. Haruaki has a crush on Ms. Arima and tries to get closer to her, but all Ms. Arima can think about is horse racing... This is a romantic comedy about a nursery school teacher who falls in love with a serious horse racing fan.

(Source: Natalie, translated)