Fics like Lightning Strikes Twice

When Kakashi is five years old, his father is taken down by a vengeful villain. His left eye bleeds into red and black, and Kakashi remembers. Everything. Aizawa Shouta is dismayed to see Hatake Kakashi, former student and overall pain-in-the-ass, join U.A.'s staff as Class 1-A's teaching assistant. How is Aizawa supposed to make it through the year with his sanity intact? Kakashi has joined the U.A. staff with the express goal of seducing his ex-teacher. And also protecting the future generation of heroes from the shadowy forces of villainy, but who cares about that?

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