Kouro Tengu no Dekiai-kon

Anju's complex stems from the existence of her younger sister, who is doted on for being "cute" and "talented." Despite her tremendous efforts to compete with her sister, she continues to lose day after day...! Then one day, a letter arrives from the Tengu village, informing Anju that she has been chosen to be the bride of the Great Tengu. In Anju's village, it has been a tradition for generations that the "kindest girl in the village" marries a Tengu, and being chosen as a Tengu bride is considered a great honor. Someone has finally chosen her! Filled with a sense of superiority and joy, Anju heads to the Tengu village. But there she finds a handsome, but lecherous and insatiable, Great Tengu...!? A doting love story that will satisfy both your heart and body ♡

(Source: Manga Park, translated)