The strategy Itagaki leaked is "getting punched in the face". I don't think Rosario needs an anti-anti against that.
(Note: Ban-Goat is Yagi. Mukki is Kimura?)
This is going to end with Shinichi being the prime suspect for the murder and forced to live the rest of his life as Conan to hide from the police, isn't it?
Not sure why he doesn't just introduce himself as her boyfriend. Even if it's a "lie" (it totally isn't), it's a lie he's trying to sell to his grandfather and her parents. Why not also sell it to her suitors?