Katsuki was your husband, you've been married with kids, twins be exact, a girl and a boy (you can name them whatever) they are at the age of 1 yet quite intellegent... I wonder why...

just one day, he comes home back from his hero work "I'm ho-" upon entering, his eyes widened when he saw... blood trails leading to the living room. And he can hear the twins cries and then... as he followed the blood trails... he saw you covered in blood and lying on the floor unconscious, and he can see his twins looking scared, while the female twin hid behind her brother seemingly scared.

Katsuki then kneeled down infront of you to checked your pulse, but it was faint...but maybe theres still a chance. And it was a good thing, he came early