Shuichi Tsubaki

A trusted friend of Ichijo, he is the doctor that looks after Yuusuke and treats him when he becomes injured, while also researching the effects of Yuusuke's fusion with the Arcle. Though he's a light-hearted person, he was very serious and worried when talking about Yuusuke's future transformations because of the constant dangers that surrounded the Kuuga legend. He also performs the autopsies of the Grongi victims in order to determine causes of death.