Yūto and Haruka continue to get closer, while Shiina's feelings for Yūto grow stronger. A meeting to plan for their school trip to Hokkaido is held at Yūto's house, but it soon devolves into a party. Afterwards, Shiina decides to confess to Yūto during the trip. In Hokkaido, Yūto and Haruka spend their free time together, albeit accompanied by Mika, Hazuki, and Nanami, who have tagged along. At day's end, Haruka tells Yūto that she had fun and asks him if they can have another date, which he happily agrees to. Once they return to the hotel, Shiina takes Yūto out into the city and she confesses that she loves him. Haruka, who had followed them, overhears the confession.

Yūto is unsure of how to respond to Shiina's confession, while Haruka is confused about her own feelings for Yūto. When Mika, Hazuki, and Nanami learn of her plight, Hazuki tells Haruka that they cannot help this time because Haruka must determine how she feels about Yūto on her own. Haruka tries to speak with Yūto, but is unable to do so and is left in tears when Shiina pulls him away. After spending the day with Shiina, Yūto comes to realize the depth of his feelings for Haruka, and parts ways with Shiina to look for Haruka. When he finds her, he confesses his love for her and Haruka reciprocates. They officially become a couple, while agreeing to keep their new relationship secret between themselves. After returning home, Haruka asks Yūto if they can form a doujinshi circle for the upcoming Summer Comiket, and he agrees to it.

Yūto and Haruka make progress on a scenario for an anime game. They present the completed game at Comiket. Nobunaga then shows up saying that three girls were looking for their stand. When Yūto and Nobunaga arrive with the three girls, Haruka freezes. The girls turn out to be her former "best friends" from when she was in middle school. They have come to apologize for turning their backs on Haruka when her secret was exposed back in middle school (even admitting that they like anime too); Haruka forgives them. As they talk things out, it is revealed that Setsugetsuka Tennouji, Haruka's archrival, influenced everyone to isolate Haruka. Later that night, after their game sells out thanks to Nobunaga's advertising, Mika calls Yūto and informs him that her sister is missing. Just as Yūto is about head over to assist in the search, Akiho calls Yūto that she knows where Haruka is and she is safe, but she is getting married the next day!

Setsugetsuka is gloating over having been able to cause Haruka misfortune. The Maid Team arrives at Yūto's house to pick him up and they board a jet to where Haruka is being held with the aim of stopping her marriage. Elsewhere, Touka departs for the marriage location as well. Upon parachuting in and infiltrating the building, the maids and everyone else sacrifice themselves to fight the "Hell Hounds" allowing Yūto and Mika to proceed. Ultimately, Yūto has to fight Haruka's father, while Haruka has to fight her own mother to prove their love. They succeed and come to embrace one another. Everyone then appears and applauds; as it turns out Gento and Akiho had set the whole event up to test how strong the bond between Yūto and Haruka truly is, so they can make an official wedding for them. Setsugetsuka steps in to interfere, summoning the Tennouji clan's knight, but is surprised to learn the knight has already been dealt with by Touka. Haruka and Yūto then get married and are finally able to kiss without interruption.