|Hair Color||Dark brown|
|Family||Kirihiko Karasuma (Adpoted Father)|
|Enemies|| Karin Hanazoo|
He is also known to be the enemy of Karin Hanazono throughout the series.
Dark brown hair with brown eyes, wears glasses, tall.
In the anime, he is made into the running gag who tries to attack Karin and everyone else each chance he gets, although in the manga he also displays a strange behavior when he is trying to achieve something. Contrary to his serious demeanor, his mind tends to wander off in strange directions when he sees something odd and he gets easily flustered and/or embarrassed. He is also easily pulled into childish or immature conflict with Kazune if for any reason he feels an inferiority to the younger boy.
Kirio at the start of the story is seen fighting Karin when she was not an goddess, trying to destroy her ring. Doing numerous things to help Himeka he starts becoming Kirihiko Karasuma, then he fights him back and all the rings are destroyed. In the future Kirio dies before Kirika. His ring has the power of Ares.
The main antagonist and Kirika's brother. He and Kirika were adopted by Kirihiko as children. He is the student body president of Sakurakaoka Academy, the most prestigious school in Japan, where Karin, Himeka, and Kazune happen to attend. While still a student, he tests the protagonists and fights them off of the campus. Karin refers to him as "Mr. Glasses Man." or "Four eyes." (眼鏡男 Meganekko) and Karin is referred by him as "Amateur Goddess".(anime only)/ Novice Goddess.(manga only) In the anime, he is made into the running gag who tries to attack Karin and the gang every chance he gets, though in the manga he also displays strange, behaviors when he's trying to achieve something. Contrary to his serious demeanor, his mind tends to wander in strange directions when he sees something odd and he gets easily flustered and/or embarrassed. He is also easily pulled into childish or immature conflict with Kazune if for any reason he feels an inferiority to the younger boy. He is sometimes slightly condescending towards his sister Kirika for trying to be male, especially when it seems like she's getting in his way. Kirika, however, is often Kirio's voice of reasoning.His only true relative is his twin Kirika, but he does have another ‘sister’ by the name of Himeka. His ring has the powers of the god Ares.