Karin Jinguuji/Relationships

Yozora Mikazuki
From their joint trip at the ski resort, Karin became physically attracted towards Yozora and was bent to including her to her 'harem'. While the Yozora made attempts to distance herself from Karin, the latter continued to make her advances to her which resulted in her, at one point, being tied-up inside a futon. However, this attraction only lasted until the end of their ski trip when Karin was forced to give up her efforts due to Yozora's harsh resistance and knowing someone is more suitable to have her.

Kodaka Hasegawa
Karin and Kodaka seemed to be in an agreeable relationship when the two collaborated in planning together a joint activity between their respective clubs during their trip at the ski resort. Generally, both are more or less acquaintances seeing as how they can hold conversations normally when prompted to (despite the topics of said conversations veer towards the abnormal).

Kate Takayama
Kate was once the target of Karin's affection and thus made several strides in the hopes of 'acquiring' her, to the point of converting to Kate's religion, Christianity. However, in the end, Karin's efforts proved fruitless.