Kobato's birthday is coming up, so what better excuse for a party? For the Neighbors Club, a group of socially-inept students with no clue how to make friends, it's an opportunity for a practice party so they'll know how to behave when they go to a real party... someday. Of course, a party calls for presents, so it's time for a group shopping trip! Kodaka comes along to help the girls shop, but what our favorite misfits will come back with is anybody's guess. Also on the horizon is the school festival, an opportunity for clubs to strut their stuff! The question is, how does a dysfunctional group like the Neighbors Club come up with a single idea that will appeal to anyone but themselves?

The Neighbors Club may be a group of friendless misfits who can't get the hang of socializing despite their best efforts, but at least they have each other to practice on! Sena's continued attempts to make Kobato love her result in the entire club taking an outing to an amusement park, where they turn a death-defying roller coaster into a competition, while eating curry and... getting kidnapped by demons?! But there's more going on at the club these days than meets the eye. One of the girls has a surprise in store for everyone - including herself! And when Kodaka challenges Rika to make a truly impressive invention, the skeleton he and Yozora have been hiding may not stay in the closet for long!

Hasegawa Kodaka, a boy with few friends, along with his beautiful classmate, the oddball Mikazuki Yozora, form the Neighbors Club, a group dedicated to making friends. While this sounds innocent enough, the only people who end up joining the club are total freaks and outcasts. Together, they geek out over RPG games, pit imaginary friends against each other, and wreak havoc in one another's lives while struggling to build social skills. Can black sheep like these really learn to become friends? And for a hot-blooded guy like Kodaka, why must everyone else in the club be females who are so attractive yet so insane?!

Kodaka's life hasn't been easy since joining the Neighbors Club. Getting dragged into a conversation by another strange nun was the last thing he needed. Then again, her advice seemed sound, until he discovered she was seriously twisted. Now her close ties to another member of the club will make it even harder for Kodaka to escape her. At this point, however, Kodaka is used to not being in control of his destiny. Whether it's studying with Sena (and discovering an unnatural obsession!), or having Maria invade his home to fight with Kobato, Kodaka's learned to go with the flow. Of course, this may not be the best approach to life, especially when it seems like other people are calling the shots for him!

Sena and Kodaka have a choice to make: do they keep their feelings bottled up? Or do they start dating and destroy the Neighbors Club? With their friend Yozora already shunning them outside of class, getting together just might ruin the friendships they've worked so hard to build. And just what does a certain bat-earned superhero have to do with all this?!

Ten years ago, Kodaka's best - and only - friend was a kid he knew only as "Sora." Now he finally knows that Yozora and Sora are the same person, but that doesn't mean their friendship can pick up where it left off. And to make things more complicated, she's known who he was all along... and chose not to tell him. Despite all that, life in the Neighbors Club continues as always. There are elaborate new hairstyles to try out, and new kinds of anime to explore! It all sounds normal enough, but if there's one thing you can count on with the Neighbors Club, it's that "normal" does not apply!

After Sena unexpectedly told Kodaka how she felt about him, he ran away...and a week later, he still hasn't been back to the Neighbors Club. Instead, he's been forging new connections--with the girls from the student council! But Kodaka can't hide from his complicated club relationships forever, especially when things aren't going so well with the Neighbors Club in his absence. And if he won't come back on his own, Rika's ready to take things into her own hands...!