Araragi even calls the two 'yuri sisters' after catching them sleeping naked in each other's arms. When things get too hot, however, the left-out sibling appears to put the foot down really fast. Karen and Tsukihi got boyfriends similar to Koyomi to try and make him jealous, and Koyomi doesn't have that much hesitation engaging in. The difference is that Karen's points upwards while Tsukihi's points downwards.

Iconic Item: Each Fire Sister dons a hair clip that looks like a fried egg.

Free-Range Children: Their parents rarely appear in the series.

Expressive Hair: Each of the Araragi has an Idiot Hair that can wiggle around or stand straight up.

Deep down they realize that the other side has a point.

Koyomi dismisses the whole 'Fire Sisters' ordeal as just naive kids playing superheroes, Karen thinks her brother is a Lazy Bum, and Tsukihi thinks her brother is both inexperienced to romance and hopelessly lecherous. Foolish Sibling, Responsible Sibling: Koyomi and the Fire Sisters view each other side as foolish, but for different reasons.Boke and Tsukkomi Routine: Koyomi often plays the straight man, but sometimes the roles are reversed.Sometimes this get serious, such as during the Mother's Day when Koyomi doesn't want to stay home due to perceiving himself as The Un Favourite. Annoying Younger Sibling: How Koyomi sees his sisters most of the time, especially when they try to wake him up.

Kizumonogatari breasts pencil animation