At the beginning, Dein was quite nervous while talking with Elena. And the reason for this nervousness was definitely because of how Elena had made her entrance.
But after talking with her for quite some time, this fear was mostly gone. Elena was a very approachable person and talking to her was a very comfortable feeling. So obviously Dein was able to get rid of his fears quite easily.
As for the reason why Elena had made her entrance this way, there was actually no serious reason. She was just playing around and nothing else.
After leaving the meeting venue, she had immediately decided to have a conversation with the supreme magus but she found that he was busy with the last part of his research.
Obviously Elena was not going to disturb him at a critical moment like this, so she started waiting for him to finish the experiment.
And as she was waiting, she suddenly started to imagine the scene in which she was going to meet with this man.
