After being forced to abandon seeing fireworks with her fellow Student Council members, Kaguya shuts herself up in her dark bedroom. Hayasaka, Kaguya's maid, is worried about her mistress's depressive state. She tries to cheer Kaguya up and when that doesn't work, introduces a plan to sneak out of the family mansion. Kaguya manages to slip past a pair of vigilant butlers and reaches the venue, but the fireworks display is already over. Kaguya is in tears, since she really wanted to see the fireworks with the others, but then she hears a familiar voice: "Then, I'll show them to you".

Half a month into summer vacation, Kaguya spends her days moping around, unable to see Shirogane without the Student Council meetings. However, the Student Council members are planning on going to see the fireworks together at the end of the break. Due to her strict upbringing as the daughter of the head of a conglomerate, Kaguya has had no memorable summer experience and has been looking forward to the day she gets to see everyone.

Kaguya and Shirogane have seemingly reconciled after their fight from Shirogane's visit when Kaguya was sick. However, resentments linger, ready to explode at any moment. Kaguya decides to consult Kashiwagi since she has a boyfriend and tells her that she is "asking for a friend". Meanwhile, Shirogane asks Ishigami, who watches a lot of romantic comedy, about how to make up with a girl after a fight, but Ishigami ends up getting heated, as Kaguya and Shirogane get advice, the two slowly begin to realise how they truly feel about each other.

Kaguya is sick at home, and a teacher has asked Shirogane to deliver her assignments to her house. When Shirogane tells the rest of the council members, Fujiwara excitedly volunteers to go in his stead. According to Fujiwara, Kaguya becomes needy when she is sick. Shirogane's heart beats fast as he imagines this cute Kaguya, but the entire Student Council couldn't possibly barge in on Kaguya when she is sick. And so, Fujiwara proposes playing a game of concentration to decide on who will visit Kaguya. Even Ishigami is dragged into what becomes a heated battle.

As final exams approach, the psychological war between Kaguya and Shirogane intensifies within the Student Council Office. Kaguya is an all-around genius with her pride at stake but she has never been able to surpass Shirogane in academics. On the other hand, Shirogane is a genius through hard work, who won't allow anyone to take his position at the top of the class. In an attempt to get ahead of the other, the two lie through their teeth and it becomes a battle of finesse. At last, it's the day of finals, but which of them will the goddess of victory smile upon?

Kashiwagi's boyfriend returns, seeking more romantic advice from Shirogane, while Kaguya yet again attempts to eavesdrop on the two. Shirogane's advice the first time around successfully brought this couple together, but the boyfriend tells Shirogane that he hasn't been able to hold hands with Kashiwagi after a month of dating. Kaguya is dumbfounded when she hears him ask, "How can I hold hands with her?" but Shirogane is relieved by this simple question that seems manageable even for someone with no experience in romantic relationships. However, Shirogane's advice seems to once again take an unexpected turn.

Yu Ishigami is the fourth member of the Student Council. Despite being a first-year, he was scouted by Shirogane for his expertise and was appointed as treasurer. Because he is introverted, Ishigami often goes unnoticed, but he is also the most indispensable member of the council. Suddenly one day, Ishigami comes to Shirogane to request his resignation. No matter how desperately Shirogane tries to persuade him to stay, he seems to have firmly made up his mind. Apparently, the situation is beyond Ishigami's control, as he begins to tear up and explains that "he's likely to get killed..."

Despite his excellence in academics, Shirogane severely lacks in athletic ability. Which is why he has been tirelessly practicing volleyball after school. With only a week left until they begin playing in class, it all seems hopeless as there are no signs of progress and his image as the perfect Student Council President could soon be tarnished. Just as Shirogane starts losing hope, Fujiwara shows up. Swallowing his pride, he pleads her to coach him, and so Shirogane's days of training under the intense tutelage of Fujiwara begin. Will his volleyball serve improve to the level of an average person in time?

Kaguya and Shirogane are somehow roped into cosplaying, when Fujiwara suggests her idea on how to welcome the sister school visiting them from Paris. Deep down, Kaguya does not take this suggestion seriously, but she still tries on the cat ears and sighs out, "meow." This instance strikes a soft spot of Shirogane, who loves cats. But as adorable as Kaguya looks, Shirogane tries to keep his cool. Meanwhile, Kaguya is just as enchanted when Shirogane also ends up trying on the cat ears. How will today's battle turn out, as the two fight to cover up their true feelings?

Fujiwara is startled when she unknowingly flips through the magazine that the principal had confiscated, and comes across a "When was your first time?" survey. The magazine reports that 34% of high school students already have that experience. While Shirogane tries to calm Fujiwara down by affirming that the number is inflated, Kaguya declares, "The percentage sounds accurate to me," and adds that she's also already experienced. Shirogane who has never been in a romantic relationship is astounded when he hears this confession. Kaguya seizes the opportunity to attack him with, "Don't you have a girlfriend?"

The students at Shuchiin Academy are under the impression that Shirogane is an expert in romance too. But in reality, he has no romantic experience whatsoever when a male student comes to him for advice regarding a crush. In a desperate attempt to cover his lack of experience and to protect his dignity as the Student Council President, he takes on the student's request and claims, "Leave it to me!" For Kaguya, who has been eavesdropping, this becomes an excellent opportunity for her to find out Shirogane's views on love. But Shirogane's advice on love seems very absurd.

Shuchiin Academy is a beacon for talented students with a bright future ahead of them. The vice-president of the student council, Kaguya Shinomiya, and the president, Miyuki Shirogane, are attracted to each other, but they are both too proud to be honest about their feelings. As a result, all they do is think about how to get the other person to confess their love. Six months pass without anything happening, when one day, a pair of tickets to "the movie that turns boys and girls who see it together into a couple" won by the secretary, Chika Fujiwara, triggers the cunning battle of love.