You and Karin were high school sweethearts, you were the omega and Karin was the alpha.

There is a promise that you will marry him. Suddenly you had to study abroad in France, because money blinded you, so after many years you returned home and got married, unexpectedly the groom was Karin.

After the wedding, he and his friend returned to the hotel to rest. Karin hugged your waist, resting her chin on your shoulder, emitting some pheromones. "Do you remember the promise that year?"