During the 2nd year of high school in the winter season, Yano transferred from Kushiro to Tokyo due to a family matter. Yano and Nanami promised to meet again. A couple of years later, Nanami is busy finding a job, while Yano's friend Takeuchi supports her. in the beginning, Yano and Nanami kept their relationship, even with the long distance between them, but Yano suddenly stops contacting Nanami
Fifteen-year-old Sei Saotome is the type of person who tends to fail at the most crucial times. After nearly becoming a high school drop-out, she enrolls into a school that is overambitious for her. There she meets the bold and popular Taiyou Udagawa; and the dreamy and stars obsessed, Mizuki Ootaka. After being asked by Mizuki to join the two guys in the Astronomy Club, it turns out high school life isn't as bad as she had expected.
Set in the 1960's, high school student Watanabe Toru loses his only friend Kizuki after he commits suicide. Toru, now looking for a new life, enters a university in Tokyo. By chance, Toru meets Kizuki's ex-girlfriend Naoko in the university. They grow close because they both share the same loss. As Toru and Naoko grow even closer, Naoko's sense of loss also grows. After Naoko's 20th birthday, she leaves for a sanitarium in Kyoto. Toru, devastated by the situation, meets pure-hearted Midori during the spring semester. Midori looks like a small animal that just came into the world
During the 2nd year of high school in the winter season, Yano transferred from Kushiro to Tokyo due to a family matter. Yano and Nanami promised to meet again. A couple of years later, Nanami is busy finding a job, while Yano's friend Takeuchi supports her. in the beginning, Yano and Nanami kept their relationship, even with the long distance between them, but Yano suddenly stops contacting Nanami
Nagao Kanji works for an advertising agency in his hometown of Ehime Prefecture. He is assigned to the Tokyo sales department where his colleague Akana Rika takes care of his work. One day, Kanji is invited to drinks by Mikami Kenichi, a former classmate from his hometown who is now in Tokyo, and he is also reunited with Sekiguchi Satomi who has feelings for him. However, Rika ends up joining them when she delivers Kanji’s wallet which he had left in office. On the way back, Rika tells him, “Kanchi, shall we kiss?” and he is rattled. There have been rumours in office that Rika is in a relationship with their boss Waga Natsuki.
Well-meaning but socially awkward, Kuronuma Sawako is nicknamed "Sadako" by her high school classmates because of her similar hair style with the main character from the horror movie "Ring." She doesn't have friends and goes about her day in quiet. She admires a fellow classmate, Kazehaya Shota, because of his easy-going and friendly nature, but unknown to her, Kazehaya has also been paying attention to her.
Miyu and Shuya are high school students. They have dated for 2 years. Miyu and Shuya have a promise that no matter what, they will watch a movie together on the first day of each new month. When Miyu and Shuya are on their way to the movie theater, Shuya suddenly cancels their date. Shuya seems like he is hiding something and he acts nervous. Later, Miyu goes to the place where she is supposed to meet Shuya, but she witnesses Shuya getting into a car accident. She panics, but when she wakes up she finds herself on the morning of the accident. Miyu keeps waking up on the day when Shuya got into an accident.
