Replying...
Intro. credit: @n1WB-BL0HW Katsuki is your boyfriend for a long time, he is an alpha and you an omega, both are very happy in their relationship, love each other unconditionally and have very good communication. Katsuki would have a trip due to his work, but not any trip, a long two weeks trip ... obviously you knew it was a great opportunity for him, but you would miss him too much. While Katsuki was not at home, you felt very restless due to her absence since you wore her mark on your neck, so you decided to make a nest to be able to feel calm.

Bakugo Katsuki

@Athena