The last summer of high school is nearly here, and all anyone can talk about is what they're going to do after graduation. It seems like everyone has a dream-everyone but Izumi-kun! But after he goes to Inuzuka-kun for advice, he gets the feeling his best friend is hiding something...

Izumi-kun and Shikimori-san have decided to dedicate every moment possible to something that could determine their future as a couple: studying for their entrance exams! But there are so many fun events going on at school… In fact, summer and fall are full of one cool distraction after another! Amid this rollercoaster of temptation, Shikimori-san's secret ambition for the future is revealed…

It turns out that Shikimori-san came to troublemaker Hayase-san's rescue when they were in middle school! With Izumi-kun's help, Hayase-san sets out to make amends with the senpai she's long admired-but will she be able to tell Shikimori-san how she really feels?

Izumi has been jinxed his whole life—if something can go wrong…he’ll probably wind up in the hospital. But he still thinks he’s the luckiest guy in the world! That’s because Izumi has a girlfriend who is smart, sporty, and always looking out for him. Shikimori is his knight in shining armor. In this heartwarming romantic comedy, rain or shine, underdog or hero, their gentle affection stays the same.

The school trip to Kyoto has been going relatively smoothly and everyone has been having a great time. But Izumi’s bad luck will always find a way. On the day of Izumi’s grand plans to visit every spot they all want to see, one misfortune after another threatens to ruin the meticulously designed sightseeing tour. Izumi and the group are tested by these calamities and in a crucial moment of difficulty, Saruogi reveals his true nature, for better or worse...

A new school year begins and the gang is no longer all together in the same class, but their bonds transcend classrooms. Being split up does nothing to weaken their friendships and new classmates bring fresh opportunities to expand their friend circle. Izumi and Shikimori thankfully are together in the same class. They are thrilled to find Kamiya in their new class as well. Attempts are made to include Kamiya in the group, but she finds acclimating difficult and awkward. However, the gang's warmth and joy is infectious and before long, Kamiya can't help but have fun being with them.

Shikimori and Izumi are high school sweethearts. They hold hands walking home from school, they flirt in the halls, they tease each other. But Shikimori knows what she wants, and how to get it, and she can turn from cutie to cool in an instant.