Matoi is the younger sister of Mamoru.
Matoi is a first-year in grade school and part of the Junior Fire Fighters. Much like her brother, she is energetic and kind. She looks up to Mamoru, so she follows him around all the time. Although she is gentle and sweet, she sometimes ends up causing trouble due to her immense curiosity. Unbeknownst to everyone, especially Matoi herself, she possesses the potential to "calm a dragon" .
|Main Characters:||Mamoru, Matoi-chan, Tasuku Yashima, Mamoru's grandfather, Mamoru's mother, Nyanja, Monja, Earth Dragon|
|Supporting:||Kenta, Tamao, Wabisuke, Futaba|