Motoko's older sister, Tsuruko, comes to bring her home to take over the family dojo. Desperate to escape that fate, Motoko pretends Keitaro is her fiancé. But the ruse backfires—Tsuruko shatters Motoko's prized sword and banishes her from their martial arts school. Devastated and directionless, Motoko must now decide where her heart truly lies.

Naru finally confesses that she believes Mutsumi is Keitaro's promised girl—and comes to terms with her own feelings for him. Meanwhile, Keitaro discovers the truth about the promise. But with his heart now torn between that old vow and his growing love for Naru, he must make a choice: past or present?

Naru grows increasingly conflicted, believing Mutsumi is the girl from Keitaro's childhood promise. Just then, the previous manager Hina returns and announces a two-day evacuation for renovations. As the residents temporarily scatter, Naru and Keitaro find themselves alone—giving them time to face unresolved feelings.

Naru's younger sister Mei shows up at Hinata House and tries to convince Naru to return home. When Naru refuses, Mei blames Keitaro and hatches a scheme to pair him up with Mutsumi instead. With Kitsune's help, the plan unfolds... trapping Keitaro and Mutsumi in a situation that's more than just close quarters.

Thanks to Naru's tutoring, Keitaro scores surprisingly well on his mock exams for Tokyo University. To show his gratitude, he invites Naru out for a special meal. As the date winds down, Mutsumi appears, and things quickly devolve into yet another study session. But when Mutsumi later invites Keitaro out on a date of her own, sparks begin to fly—and not all of them romantic.

Keitaro and Naru form the "Ronin Squad" with Mutsumi, preparing for the next exams. Taking a break, they explore secret passageways in Hinata House with Kaolla and Sarah. They discover a mysterious lifelike doll—until it suddenly begins to speak...

Kaolla's boredom triggers her transformation disease, turning her into an uncontrollable adult version of herself. She turns Hinata House into a jungle! Naru seeks help from Kaolla's sister, Amalla, while Keitaro gets pulled into the madness.

The summer job ends, and the group heads to a festival in yukata. Keitaro and Naru remain awkward after recent events. Suddenly, Kitsune shocks them all with a heartfelt confession—she's liked Keitaro since the moment they met.

As Hinata House enjoys their beachside stint, Motoko spars daily with Seta. Her sister notices a drop in her sword skills, prompting Motoko to prove herself by battling a local spirit. But the situation grows more eerie than expected…

With financial woes looming, Haruka takes everyone to a beach house to work over the summer. The group must perform a ridiculous play to attract customers, while Keitaro struggles with his feelings for Naru amidst all the chaos.

While watching over Seta's mischievous daughter Sarah, Keitaro and the girls chase her to a forbidden door. Suddenly, the long-sealed door creaks open, leading to a surprising discovery—and an even more surprising confession.

Due to overspending on parties, Hinata House faces a complete utilities shutdown in three days. Keitaro takes on a brutal manga assistant job to help. Meanwhile, Naru runs into her childhood crush, now a Tokyo U archaeology lecturer, rekindling old feelings.

After witnessing a near-kiss between Keitaro and Naru, Shinobu becomes fixated on the idea of kissing. She starts asking everyone what a kiss means, and when Akiko casually mentions kissing yesterday, Shinobu is thrown into a swirl of jealousy and curiosity.

Motoko, terrified of turtles, gets her clothes soiled thanks to Tama-chan. With everything in the wash, she's forced into girly clothes by the others. Keitaro catches sight of her transformed appearance—and is unexpectedly captivated.

Keitaro's club hosts an idol contest, and Naru unexpectedly wins! As she skyrockets into the limelight with TV appearances and a CD debut, Keitaro begins to feel left behind—just as their paths start to diverge.

Rumors swirl of a beautiful woman wandering the hot spring town, followed by crocodile attacks. Kentaro suspects Kaolla is behind the chaos. Things escalate when Kaolla mysteriously ends up in Keitaro's bed that night…

Keitaro falls asleep while counting the tenants' rent. When he wakes, the money is gone. Panic ensues, and all the Hinata House girls join forces to solve the mystery of the vanished cash in this comedic whodunit.

Motoko, struggling with her feelings for Keitaro, is warned by her sister Tsuruko that she's losing focus. Determined to return to her disciplined self, Motoko challenges Keitaro to a duel. But during the match, an exhausted Keitaro collapses into her arms...

Kaolla invents a machine that shows people's dreams on TV. In Naru's dream, a handsome man resembling her old classmate Kentaro appears. Smart, rich, and cool—Kentaro seems like the perfect guy, and Keitaro suddenly finds himself with serious competition.

While the Hinata girls panic over Keitaro and Naru's absence, a news report from Kyoto shocks them—Keitaro's been spotted! As they scramble to find him, Keitaro and Naru encounter a mysterious woman who's failed her university exams, and things get unexpectedly romantic.

After their entrance exams, Keitaro and Naru both decide to travel—coincidentally to Kyoto, and even on the same train. With broken glasses and blurred vision, they end up spending the trip together without recognizing each other. Back at Hinata House, scandalous rumors start flying.

Keitaro's secret as a mere cram school student is exposed. The girls agree to let him stay as manager—on the condition that he studies hard and gets into Tokyo U. Meanwhile, Naru suggests he consider another university, causing tension and confusion.

When resident swordswoman Motoko returns from a training camp to find a man in the dorm, she declares war on Keitaro. But despite her fierce protests, her heart starts pounding every time she sees him. Is this… love?

Shinobu, the timid daughter of a local diner, faces moving away due to family issues. Unable to voice her feelings, she begins preparing to leave. Just then, she meets Keitaro and the quirky residents of Hinata House, and her life starts to change.

Keitaro Urashima promised a girl 15 years ago that they'd get into Tokyo University together. Now a second-year ronin (failed applicant), he heads to his grandmother's inn to focus on studying. But to his shock, the inn has become an all-girls dormitory—Hinata House!