Seijo no Kokou Dakkyaku Keikaku

Roselinde was raised in the traditional manner and is hailed as the saintliest of saints, but she's a coward at heart and a reclusive princess with no friends she can speak honestly with. Her true nature is discovered by the wind god knight, Elheine! "Let's improve. You must act like a proper saint." Even if you're not like a saint, I want you to help protect the country. A fantasy romance about saving the country with eccentric knights! (Source: KADOKAWA, translated)