There is a rift in the relationship between Nan (played by Honda Eye) and Dongzi (played by Shida Miku) and the cohabitation relationship is facing a crisis of ease!?The female middle school student who likes Nishino (Mazuko Atsuki) treats Nan as “Opasan ”, and Nan is very angry!There is also a past that Nishino didn’t know...

Nan (Honda Wing) is born free and unrestrained and is prone to opposition to Toko (Shida Miku) who is serious about it. This day, it also became a big fight because of a small matter.The balance between the three people of Kita-kun (played by Yoshi Iwase) is about to be broken. Nan, who is anxious, can't help asking the hospitalized patient, big-name actress Arishima Juanko (played by Kuko Manda) what would you do when the rival appears?“ asked.

On the way home that day, in order to make Dongzi, who regards himself as a trouble, Nan went to the bookstore where Nishino (Matsuko Toshiki) worked for buying cooking books.However, Nan's superficial thoughts were seen through by Nishino.Moreover, Nishino's fan Oizumi Ten (Yonggou Naohiro) was jealous when he saw the intimate conversation between the two and treated Nan as an aunt, and Nan's anxiety reached its peak.

Tian Qian, a middle school student, borrowed an umbrella from Nishino while hiding from the rain in front of the store, and took this as an opportunity to develop a crush on Nishino.However, although Nishino noticed Tian’s repeated eager gaze, he did not mean that ” would be misunderstood and would be troubled.This is related to Nishino's painful memories related to the opposite sex.

On the other hand, Matsuyama Dadi (Hashimoto and Tairiki) who missed Tian accidentally saw Tian and Nan quarrel, and learned that Tian was suffering from a serious love a bookstore clerk named % Nishino.Then, in order to confirm with your own eyes what kind of man is, he visited the bookstore, but there was some reason Beijun wearing the famous Nishino brand...