Has anyone ever me or know any real tsunderes? It can be anyone that you have met in your life, doesn't matter when, where, or how. So if you got an interesting story, let's hear it!
My closest thing is with a girl I met in college and she spent a large amount of time justifying how she would help me and tell me stuff without actually claiming to like it.
I didn't find her attractive though and I still spend most of the time teasing her.