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.

Izumi's first meeting with Shikimori's mother becomes a test of courage—he must confess they’ve been in a long-term relationship! With Shikimori inconveniently absent during the moment of truth, will his love keep him from faltering? Afterwards, Izumi and Shikimori prepare for final exams. Shikimori's hyper-competitive nature goes into overdrive when they make a bet on who will score higher! As Christmas approaches, Kamiya prepares to enjoy the holiday quietly, but Nekozaki invites her to a party that challenges her guarded nature. Party activities are out of Kamiya's comfort zone, but with the right friends, maybe there'll be some Christmas cheer?

It’s the big day—the team is running in the sports fair, and couch-potato Hachimitsu and Izumi’s jinx are along for the ride! Of course they all want to win—but hopefully they can just avoid being a total embarrassment. Then, once the class activities are all wrapped up for the semester, Izumi and Shikimori finally get some time alone together. Parents, oblivious friends, and hurt feelings make for a bumpy road, but Izumi thinks he has a plan.

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.

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.

Shikimori spends some quality time with her rival (?) Kamiya and finds that they have a lot more in common than just their attraction to Izumi. Could this be the start of a special friendship? With the culture fair now over, the time has come for the dreaded (to some) sports fair, and the whole gang has been assigned to the relay race team! Hachimitsu, whose interest in sports and all physical activities is nonexistent, faces a difficult dilemma. Her friends are passionate about competing to win, while she is passionate about not exerting herself in any way. Will the power of friendship overcome her deep distaste for running or, heaven forbid, practicing running?!

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?