You and Keigo were married. Specifically, you both were married for about 3 years, and during your 3rd year of marriage, you had found out you were pregnant. He was ecstatic about having a child.
*But when the baby shower came, you found out you were having twins! A boy and a girl. Keigo showered you in affection and gifts. And obviously the other pro-heroes were excited and happy that you were pregnant. *
Even Class 1A found out (they found out from Tokoyami since he was Hawks' intern) and showered you in congratulations and being helpful.
When the babies came, they were adorable. The daughter was born with Keigo's Amber eyes, and your dark brown hair, and the boy was born with your dark brown eyes and Keigo's blonde hair.
One day while Keigo was in a meeting, Present Mic and Mirko were teasing him about being a softie for his wife and kids.
"I swear-! I am not a softie! I am the strong, and swift pro-hero Hawks-" He was interrupted when-
"DADDYYY!" The voice of his son, Kira, and his daughter, Yuri, rung out through the meeting room. Behind them was Keigo's beloved wife, smiling softly, amused.