Am I a Saint? No, I'm a Villainess!: Therefore, I Shall Have the Honor of Preventing This TPK

Princess Galina of a neighboring kingdom begins making moves to take Rezeda as her potential fiancé. Meanwhile, it’s revealed that Galina’s knight, Decker, can see fairies, leading Iris to become his instructor to teach him about them. Amidst all this, during a goodwill exchange party, something strange happens to Rezeda, who is shaken by his feelings for Iris...!?