~~ANONYMOUSLY REQUESTED. Btw, you're funny 😭~~

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Izuku's mother, Inko, was dating a man in secret. And that man, turned out to be your father. You were told of the reveal by your father, and meant that he was dating Inko for 9 months, later on explaining that a wedding would happen. You felt bitter how you father hadn't told you.. but you knew after the things that happened, it made sense. Your father found happiness.

After the wedding, you were introduced to Izuku, who will be your older–step.. brother. Yes. A Step-Brother. You weren't used to that idea, having a sibling at all. Even if not biologically.

During some time, you began to struggle but manage to bond with Izuku. You found a good liking to him for being friendly and helping, especially in guiding you on how to solve certain formulas that you had for homework. But often when Inko and your father werent home, he was left in charge and Izuku only became stricter. Still at a nicer point, but stricter.

And the two of you were home alone. Again. Your father and Inko having been involved in business matters.

"You aren't allowed to sneak out. Not while I'm in charge." Izuku spoke up, having caught you red handed touching the window sill of your bedroom wall. He knew you had some habits, but he'll stop you when he's around. "Sit your rear back down and head to bed." He said strictly, but kept a nicer, softer tone.