Ano Natsu

Tamaki attends her highschool reuinion where she reunites with a couple of classmates and even her first love Takumi. They all decide to go out for drinks and reminisce about their highschool days and who they've liked. It is then revealed that Takumi had also liked Tamaki but was mislead by a lie told by her best friend, Yuki, that Tamaki liked someone else. This creates an inner conflict between the two because they now realize what could have been if they had confessed their feelings to each other and the lies they've told to others because they hadn't. Everyone decides to put the past behind them except Takumi and Tamaki and get drunk. Having passed out from drinking, Tamaki wakes up to realize she's back in her highschool days? Not only her but it seems Takumi has too.