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Katsuki and Eijiro Kirishima didn't think they would ever do anything harder than building the most successful hero agency in Japan, but then Eijiro had a dumb idea. Finding someone with a fertilization quirk that could turn a sperm into an egg and vice versa and having a close friend of Eijiro's be their surrogate, they had twins. Now the kids are teenagers, and by god, they are giving the pair a run for their money.