TONIKAWA: Over the Moon for You

On a snowy night while preparing for his entrance exams, Nasa Yuzaki encounters a mysterious girl who draws him in, leading to a life-changing event when he is struck by a truck. After a dramatic confession, he agrees to marry her before losing consciousness. Years later, as his life appears to have moved forward, the girl unexpectedly reappears at his doorstep.

Nasa and Tsukasa have officially registered their marriage and are preparing for their first night together. Upon realizing that Nasa's apartment lacks basic necessities for two people, Tsukasa suggests staying at a hotel, but Nasa prefers to go shopping instead. After restocking the apartment, Tsukasa sleeps calmly, while Nasa experiences a mix of excitement and tension as he discovers a new side of his wife.

Nasa and Tsukasa start their life as newlyweds by visiting a bathhouse operated by Kaname Arisugawa, a childhood friend of Nasa's, who is taken aback by the sight of him married. While Kaname expresses curiosity about the marriage, Tsukasa engages with Kaname's sister Aya, telling her that they are family.

While waiting for Nasa to return, Tsukasa is approached by a young girl named Chitose, who addresses her as "Nee-sama" and asks her to come home. When Tsukasa ignores her, Chitose turns to Nasa, who tries to comfort her. Upon learning that Nasa is married to Tsukasa, Chitose's attitude changes, leading to a confrontation in which she pushes him into a black car before taking him away.

As the Kaginoji household continues to be engulfed in turmoil, Nasa and Tsukasa choose to tie the knot in a church ceremony. Upon hearing from Nasa that he has finally proposed, Kaname points out that he has yet to secure a wedding ring, which leads him to recognize the significance of such a symbol in married life.

Nasa, still adjusting to his new married life, realizes he has not yet told his parents about his recent wedding. He tries to address the matter with a quick phone call, but Tsukasa insists on meeting them in person. Despite Nasa's nervousness, the couple travels to Nara to meet his parents.

Nasa and Tsukasa take a bus to Nara to visit his parents, attempting to make the trip feel like a romantic getaway. Chitose unexpectedly appears at a service area and confronts Tsukasa regarding her marriage, leading Nasa to question his own reasons for marrying her. As they continue touring Kyoto, Chitose reappears and challenges Nasa to explain his decision.

Nasa and Tsukasa travel to Nara to visit the Yuzaki family. Nasa's parents, Enishi and Kanoka, are anxious despite requesting to meet Tsukasa. Shortly after arriving, Enishi strikes a deal with Tsukasa.

Tsukasa and Nasa return to find their home damaged by a sudden lightning strike, though Nasa's preparedness lessens the impact. With temporary shelter needed, they move in with Nasa's relatives at the Arisugawa house.

Nasa and Tsukasa start their married life living with the Arisugawa family. When Nasa's former landlord offers them an apartment in a new high-rise building, they go to the showroom to consider the possibility of moving there.

The Arisugawa sisters suggest a takoyaki party to NASA as a way for the group to bond. Chitose locates Tsukasa at a bathhouse, and Aya, who enjoys games, begins to connect with both of them, leading to friendly competition.

Nasa falls ill with a fever at work but insists he is fine until Tsukasa insists on taking him to the hospital. As Tsukasa cares for him, their relationship grows closer, and after Nasa recovers, they attend a summer festival together. During the outing, Nasa reflects on how many people care for him, prompting a meaningful response from Tsukasa.

The Yuzaki family grapples with the intricacies of marriage as Nasa begins to comprehend the difficulties involved in organizing a wedding, leading to broader questions about whether a formal ceremony is essential for a marriage to be considered valid.

Old friends return in Nasa's life as he brings Tsukasa to meet his former teacher, Yanagi Naoko.

Tsukasa and Nasa go to a well-known theme park, where they run into Nasa's former teacher, who seems to be in a possible romantic scenario.

Nasa's skills prove helpful to those around him, although he remains unsure about the significance of a list Kaname finds online that details symbolic meanings of different types of kisses.

Thanks to Kaname's arrangement, the Yuzakis embark on a honeymoon trip to Kusatsu, a renowned hot spring resort in Japan.

As the group's trip to Kusatsu continues, Nasa considers inviting Tsukasa to join him in the hot springs.

The Yuzaki family purchases a new air conditioner to deal with the sweltering summer heat, which results in unexpected and humorous encounters with their neighbors.

Nasa reflects on his close relationship with Tsukasa as Kaname suggests they take their bond further by spending time together in the bathhouse after hours.

Tsukasa faces her anxieties regarding technology as the Yuzaki family meets two unforeseen visitors.

The Yuzaki family goes camping with friends and relatives, and Nasa must navigate the challenges of outdoor life despite his lack of experience.

As the Yuzaki family's camping trip approaches its final evening, Tokiko and Kaname work together to prepare a special surprise for them.

Nasa and Tsukasa return home to find out they will soon be relocating to a new apartment. Tokiko also makes a significant announcement to Nasa.