Kotarou

Kotarou is Tina's familiar. He looks just like a stuffed animal, and he talks in a rather formal and spiritless way. According to Tina, he's supposed to promote Yuuma's love, but he seems to care little for the troubles of humans. Tina would often treat him rather poorly when she's in a foul mood or when Kotarou incites her anger, though half the time it is because Kotarou's blunt comments irritate her. But even though he gives off a blunt personality, he seems to care deeply for Tina's well being and would often give her advice or lecture her when she does something unreasonable.

Spoiler

However, even though he might look weak and helpless, he truly holds fearsome powers within him. Kotarou is not merely Tina's familiar, but also her fearsome and protective guardian. He uses this power to change into his true form whenever he needs to protect Tina from harm. His true form is that of a giant wolf, and the power he gives off would make anyone think twice before even attempting to confront him. His reasons for staying by Tina's side and where he comes from is unknown.