After finally completing the first route of his visual novel, Blessing Software's producer Tomoya Aki is optimistic about the future of his team and achieving their goal of creating the best game of the season. However, they still have a long way to go. For one, Megumi Katou still has an incredibly flat personality and is unable to fit the role of Tomoya's ideal heroine. The other members of Blessing Software, Eriri Spencer Sawamura, Utaha Kasumigaoka, and Michiru Hyoudou, often forget she is even there due to her lack of presence and character. Throughout the development of their game, Blessing Software learns the struggles of working in an industry where deadlines must be met and edits are made constantly, and the hardships of working in a group setting. [Written by MAL Rewrite]

Having been best friends since middle school, Haruka Takayama and Yuu Sonoda plan to attend Misato West High School together. However, despite being assigned to the same class, a cruel twist of fate has them seated on the opposite ends of their classroom! To make matters worse, their school will shut down in three years, making them the final intake of first-year students. Undeterred by this chain of unfortunate events, Haruka is set on sticking with Yuu, striving to create many wonderful memories with her. Much to Haruka's jealousy however, Yuu's easygoing demeanor quickly attracts the attention of their female classmates. Sympathizing with her friend's growing insecurity, Yuu ends up sharing a deep, affectionate kiss with her in an empty classroom. The act intensifies their bond as "special friends," gradually revealing a different aspect to their unique friendship while also inviting new conflicts. [Written by MAL Rewrite]

Chise is an ordinary schoolgirl: small, frail, and not particularly intelligent. Her greatest joy is her budding romance with her classmate and childhood friend, Shuuji. They both live in a small military town in Hokkaido, where high schoolers have few concerns other than who is dating whom and complaining about the steep climb up "Hell Hill" every day before school. One day, Shuuji and his friends make a trip to Sapporo to buy gifts for their girlfriends. A massive air raid on Sapporo that day kills thousands, including one of Shuuji's friends, and signals the beginning of a war. Fleeing from the carnage, Shuuji spots Chise, though now she has steel wings and a massive gun where her right arm should be. Against her will, she has been transformed into the ultimate cyborg weapon, capable of leveling entire cities. As the war rages closer and closer to their hometown, Chise and Shuuji's relationship is strained by her transformation, and they are left to wonder whether she is even still human. [Written by MAL Rewrite]

After a long time, Wataru has decided to leave his family home and live on his own. The girls have also decided to split up and most of them are living separately as well. But none of them have forgotten about their brother and still stick together to meet him. (Source: AniDB)