Bonnou Musume Souryo ni Koi wo Suru

Synopsis

High-school student Nako spends so much of her time in idle amusement that her grades are dropping. So as punishment, she is forced to spend her summer holidays at a temple! She thought it was going to the worst summer holiday ever but her instructor, the vice-priest Ikkei is a super hottie!? He's stubborn and strict but he's also kind and reliable at the same time so she keeps getting drawn to him! (Source: Kodansha, translated)