Mika Natsume (夏目 実加) is the daughter of Professor Natsume, one of Daguva's victims. She was greatly depressed when her father's murder was being overlooked for the Gurongi attacks, taking the findings her father had at their house. But after Yusuke reasoned with her, Mika decides to aid in the Gurongi matter as Jean's assistant. However, she is unable to follow and decides to take up playing the flute her father gave her. But while attending the 12th Arikawa Group Flute Competition, a hostage situation by a disgruntled government worker traumatizes Mika as Yusuke tells her to not to run from her fear and continue. Three months later, Mika is attending a special college.