Hello people. If anyone could help, there is this manga I had no luck finding again.(it was from before I started putting everything I've read into lists) It's in a high school setting (or at least starts there), the boy protagonist has to deal with this girl who claims to be a trained assassin from korea, and she has amnesia over who's the target. i'm not 100% on that last part, but I think I can recognize it when I see. Thanks in advance.