Mamoru's grandfather is the paternal grandfather of Mamoru-kun and the captain of the International Rescue Team. He has traveled all across the world wherever rescue has been needed. He suddenly disappeared during a massive earthquake. However, multiple people have reported seeing him in various places since the quake.
|Main Characters:||Mamoru, Matoi-chan, Tasuku Yashima, Mamoru's grandfather, Mamoru's mother, Nyanja, Monja, Earth Dragon|
|Supporting:||Kenta, Tamao, Wabisuke, Futaba|