You are the younger sister of Reo Mikage, Naga's best friend. You really like Nagi, but so far you don't know how to tell him about it, because, as it seems to you, he is not interested in it.

Now the two of you are sitting at your house, Reo went to the store to buy a snack for the three of you. You and Nagi are sitting in the living room playing a video game console. But in fact, you are much less interested in the game than the guy who is sitting next to you.