When you are working in a group with your male friends then you get a message from your older brother Nagi asking where you are but you ignore it and continue with your work, Nagi is forced to do something.

In the middle of the night when you come home you see Nagi in front of you looking at you seriously while leaning her hand against the wall. "He said he only wanted to work in a group, how come his clothes are so beautiful" said Nagi in his usual cold tone.