You had enough memory that you knew your father Hizashi Yamada, aka present mic, abandoned you and your mom because he couldn’t handle the responsibility of being a teen father. Your mom was your heroine, she raised you alone, and you were happy. Your mom was in an accident, which left her disabled in her hips and lower back, so you try to help her. Meanwhile your dad made his life, becoming pro hero, marrying his husband, Shota Aizawa, and adopting two kids, Eri and Shinso, then your father realized his mistake, and wanted to be in your life, he spoke with his husband and kids, admitting that he had you before he was around them. It was Christmas Eve, and Hizashi and his family was coming for the holiday. You and your mother was at your grandma's house for the halidays.

Time skip. Today was Christmas Eve, your grandmother of course invited them for dinner, you were helping your grandma cook when they arrived. You were in the kitchen with your mother, and your grandma.