Sasami-san@Ganbaranai

The fun begins.  Sasami is an overly spoiled, introverted girl with nothing better to do than to spy on her big brother's life.

After noticing the large number of absentees at school, Tsurugi, and the other Yagami sisters find out that a game called "Yamato No Orochi" is responsible.

Sasami suddenly grows a third arm, and while searching for an answer to her extra limb dilemma she instead discovers the true origins of the Yagami sisters.

A dazed Sasami stumbles into her brother's room and finds a report detailing the Yagami Sister's surveillance of every move she makes.

Sasami wants to use Kagami as a demo-friend to make others view her as more likable. Little does she know, being friends with Kagami is dangerous to herself as well as Kagami.

Sasami meets her long dead mother on the street and convinced that she's come back, spends the day shopping with her.