The new student Hayase continues to give Shikimori trouble by ignoring the school dress code, but Shikimori refuses to back down from her approach of trying to achieve some mutual understanding. Kamiya provides some friendly support by being a role model to other students and encouraging them to follow the rules. However, it's Izumi who gets some unexpected results by inadvertently getting Hayase to open up about herself!

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…

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.

The Okinawa training camp continues to be a rollercoaster of shenanigans, now with a curious misunderstanding threatening to shake the dynamic of the club members’ relationships… And at last, the Miyakojima tradition of otori begins! Will the springtime of youth finally grace the nude diving comedy?!

A juicy tutoring gig falls in the lap of poor high school second-year Futaro Uesugi…but it turns out his prospective pupils are his classmates?! And they’re quintuplets?! All five are gorgeous, but they’re problem students who hate to study and are on the verge of failing! Can Futaro help these idiosyncratic sisters make it to graduation? Futaro was hired to guide a set of beautiful quintuplets who hate studying and are on the verge of flunking through graduation. Now, the final event of their high school careers, the school festival, is reaching its conclusion. Whose feelings will be requited, and whose hearts will be broken?! The story of the carefree, vibrant schooldays of Futaro and the quintuplets finally reaches its final volume!!

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.