Isao is a dragon owned by Motegi Asa. He is one of the main characters. He loves natto and tofu.
Isao is a small orange dragon with two tiny yellow horns, two small dotted eyes, a pair of tiny green wings that allows him to fly a short distance, and a tail that resembles a tail fin.
Isao is probably the most mature out of the other "pets", he is very good at taking care of others like a big brother and also very intelligent. He was able to write simple phrases in Japanese just by listening to Motegi reading stories to him and taught the other "pets" how to write. He was also able to write his name in English right after Tazuki taught him the English alphabets.
Isao and Motegi shares a very close relationship and he is often seen caring for her.