Suruga, the main character of Suruga Monkey, is Koyomi's underclassman, ace of the school's basketball team and one of Hitagi's acquaintances from back in junior high school. Immediately after she entered senior high school, she became aware of Hitagi's secret and was threatened by her, just like Koyomi was. She's an admitted lesbian, fujoshi, lolicon and masochist. Back in elementary school, she inherited what she thought was a Monkey's Paw but was actually a Rainy Devil from her mother. She started stalking Koyomi after she discovered he was dating Hitagi. She became friends with Koyomi and Hitagi after Koyomi rids her of the Rainy Devil. She also has been growing her hair longer since. In Suruga Devil, there seems to be a rumor about a devil solving other people's problem. Fearing that she might be the rumored 'Devil', she decided to investigate and found out that the rumored Devil is actually an old basketball rival of hers called, Numachi Rouka. Numachi has her left leg in cast, which Kanbaru recalled was from an accident years ago during a match. Numachi tells her and what she does is collecting other people's misfortunes as to make herself feel better about her injury. After Kanbaru's encounter with Numachi, the next morning her left arm (which still have traces of the Rainy Devil), has been completely healed. Kanbaru later found out that aside from Numachi collecting misfortune, she's also been collecting the devil's part. So far Numachi has collected the devil's left leg, and the devil's left arm (which was Kanbaru's) and several other devil's parts. After receiving Kaiki's gift (which is the devil's head), Kanbaru then decided to challenge Numachi to an 1-on-1 for the rights of all the devil's parts. It seems that Kanbaru is still worried about the effects of the Rainy Devil after it has been dispersed to the point that whenever she goes to sleep, she would bind her devil's arm to a pillar so that she wouldn't start sleepwalking and committing crimes and check the newspaper everyday so that she can make sure she didn't do anything unconsciously. She also has dreams of her mother once in a while giving her weird life lessons. Her mother and her father was revealed to have eloped as the Kanbaru family did not agreed on their relationship. Kanbaru is also the only person that Kaiki will ever treat in a good way.
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