In any normal situation Renge would have felt very sorry for Agito. But the truth is she was so angry right now that she couldn't bring herself to. She was angry at him for not telling her what he wanted from her from the very beginning. She felt used and annoyed and very frustrated. So, to make things worse, she gathered her books and shot him a glare, it was the glare that most girls would use instead of saying 'don't come near me again or you'll regret it' and stormed off.