Ui Tunesu

The vandal was none other than Ui's best friend. This was a massive shock to Ui, who had not detected even the slightest clue that her closest companion was connected to the vandalism. She also hadn't realized that one of the girls in her class was being bullied, or noticed that all of the victims of the vandalism actually did have something in common with one another. In retrospect, she felt that the vandal's identity should have been obvious to her from the beginning. This incident affected Ui dramatically. She couldn't help but wonder if she could have prevented the entire incident by simply being more observant. If only she had paid closer attention to her best friend, she would have realized what was going on, and would have intervened before the situation had a chance to escalate so drastically. She felt an overwhelming sense of guilt, almost as if the entire situation had been her fault. From that day onward, Ui swore to never allow a similar incident escape her notice. She became an extremely vigilant young woman, constantly on the lookout for potential warning signs that a hidden crisis was secretly underway. This earned her a reputation as a nosy girl who is utterly incapable of minding her own business - some students have even begun to refer to her by the mocking nickname of "Witness-chan."