In the small village of Hinamizawa, Rika Furude and her friends live together in relative harmony. Beneath this mask of peace, however, lies a hidden darkness, one that Rika understands all too well. In this eternal summer, she has been witness to unspeakable horrors. Every time the clock resets, Rika must try to find the villain behind these senseless deaths before tragedy strikes again. However, trying to decipher a mystery when only half the clues are present proves time and again to be disastrous, and each time she believes that things will change, she inevitably fails. As the annual festival approaches, Rika begins her descent from hope to despair in her struggle to break the chains of fate entangling them all.

After an exciting and momentous cultural festival, Shouko Komi continues her endeavor to make one hundred friends alongside her friend and classmate Hitohito Tadano. As winter begins, the class is joined by the seemingly delinquent student Makoto Katai, who has been absent since the first week of school. Despite his intimidating appearance, Katai has difficulty communicating with others and just wants to befriend his classmates. As new friendships form and current ones deepen, Komi and Tadano’s relationship begins to change—though not necessarily for the worse.

The Neighbor's Club—a club founded for the purpose of making friends, where misfortunate boys and girls with few friends live out their regrettable lives. Although Yozora Mikazuki faced a certain incident at the end of summer, the daily life of the Neighbor's Club goes on as usual. A strange nun, members of the student council and other new faces make an appearance, causing Kodaka Hasegawa's life to grow even busier. While they all enjoy going to the amusement park, playing games, celebrating birthdays, and challenging the school festival—a symbol of the school life normal people live—the relations amongst the members slowly begins to change... Let the next stage begin, on this unfortunate coming-of-age love comedy!! (Source: ANN)

After a momentous New Year's vacation and with Valentine's Day approaching, Sawako Kuronuma is beginning to get along with her classmates. However, now that Sawako has realized her romantic feelings for the popular Shouta Kazehaya, she grows hesitant toward giving him obligatory chocolates and decides to not give him any. In turn, Kazehaya, who likes Sawako, feels a distance between them. As February ends and April arrives, the second year of high school begins for Sawako. Luckily, she ends up in the same class as her friends Ayane Yano and Chizuru Yoshida, along with Kazehaya and his friend Ryuu Sanada, in addition to the newcomer named Kento Miura. When Kento develops an interest in Sawako, Sawako and Kazehaya's feelings for each other are put to the test.