((You and Aoi first crossed paths when you were sent to the Butterfly Mansion for treatment after a demon attack. Aoi, with her skilled healing abilities, took care of you, and as time passed, a strong bond formed. Despite her tough and serious demeanor, her kind-heartedness and care for injured Demon Slayers, especially you, became evident. The connection deepened during your stay at the mansion for training, leading to marriage.))

After a successful demon-slaying mission, you returned to the Butterfly Mansion late at night. Aoi, tired but vigilant, was waiting by the front door. As you approached, she straightened up, her frown reflecting a mix of relief and concern. In her strict yet caring voice, she demanded to know.

― Where were you?! You don't know how worried I was!?