Watch Haruka Nogizaka's Secret

Yūto is invited to come with the Nogizakas to a ski resort in the mountains. He thinks it is just for them but he quickly finds out the entire class is coming on this trip. While the group enjoys all the hot spring resort has to offer, Shiina sees the trip as an opportunity to express her feelings to Yūto—but in an attempt to hug him, she ends up groping Gento, who was covered in sheets. An enraged Akiho catches them in a compromising position and gets the wrong idea, causing Gento to pass on the group's shrine visitation the next day. The next evening, a blizzard arrives and Haruka goes missing on the top of the mountain. When Yūto, equipped with an insulated polar bear suit, finds her, they both fall down a ridge and become stuck in a cabin. As she is wet and freezing, Haruka takes off her clothes and joins Yūto in his bear suit in just her underwear. However, the two are quickly found not only because the bear suit has a tracking device, but also because the cabin turns out to be just behind the resort.

Yūto has to make a tough decision of whether to stay with Haruka or leave her so she can become an idol. Yūto asks Milan to attend her concert on Valentine's Day. During the concert, Yūto, with some "on-stage prodding" by Milan, decides to leave so as to go to Haruka's audition. Shiina is worried about Yūto and Haruka's relationship. Yūto decides that he wants to stay with Haruka and it is finally revealed to the unaware Haruka how Yayoi had planned to make her into an idol. Yayoi and Nozomi try desperately to stop him, but Haruka's family and maids help to get the upper hand against them. The final blow comes when they are later forced out of their talent agency after Haruka's father buys it and all associated material from them in a hostile takeover. Later at the Nogizaka mansion, as Akiho and Gento watches Yayoi and Nozomi in some mud wrestling contest on TV, Haruka gives a Valentine's present to Yūto.

Haruka receives an acceptance letter for an idol audition. It seems to have been a mistake made by Yayoi

Summer is here for the students!

Ordered by Mika, Yuuto goes to her all-girls middle school. Yuuto is taken by surprise when Mika

During the New Years break, Shiina expects something good from the fortune she received at the shrine, and coincidentally runs into Yūto on the street. Her hairpin gets knocked off into the river and Yūto goes in to retrieve it; as a thank you gift, Shiina prepares some cooked squid, but hurts her foot in the process. Mai and Ryouko, two of Shiina's friends, and Yūto come to pay her a visit, during which Yūto gives the three girls an unforgettable massage, a "punishment" for losing a game of old maid. Later on, Yūto and the others leave for the day, but Yūto comes back because he was worried about Shiina. Yūto helps her by preparing dinner, and the two spend the rest of the night having fun together. On the day Shiina returns to school from the holidays, she is cheerful, and gets giddier with joy when she meets Yūto, even with Haruka near him.

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Yuuto is invited to the World

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Haruka starts to work at a maid caf

Yuuto is asked by Nobunaga to work in place of him at the special sales exhibition of