Shy and soft-spoken Fumi Manjoume and upfront and caring Akira Okudaira were best friends in elementary school, but this changed when Fumi and her family moved away. Years later, Fumi moves back to her hometown after being accepted at Matsuoka Girls’ High School. She finally reunites with Akira, who is going to attend Fujigatani Girls’ Academy. Despite their reunion, their relationship isn't the same as it was years ago. As soon as Fumi starts attending school, popular senior Yasuko Sugimoto takes notice of her and flatters her more than any other underclassmen. After running to Akira for help so many times before, Fumi must figure out who she is as a person instead of standing in someone else’s shadow. However, that doesn’t stop Akira from wanting her friendship with Fumi to be as it once was. Will the girls be able to conquer the high school stage of growing up before it pulls them apart? [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]

When 16-year-old Nanako Misonoo enters the prestigious all-girls Seiran Academy, she believes a bright future awaits her. Instead, the unlucky girl finds herself dragged into a web of deceit, misery, and jealousy. On top of that, she is chosen as the newest inductee of the Sorority, an elite group whose members are the envy of the entire school. Having none of the grace, wealth, or talent of the other members, Nanako quickly draws the ire of her jealous classmates—especially the fierce Aya Misaki. To cope with her increasingly difficult school life, Nanako recalls her days through letters to her former teacher, Takehiko Henmi, whom she affectionately calls "onii-sama" (big brother). She also finds comfort with her four closest friends: her childhood friend Tomoko Arikura, the sociable but erratic Mariko Shinobu, the troubled musician Rei Asaka, and the athletic tomboy Kaoru Orihara. An impassioned drama about the hardships of bullying, Oniisama e... chronicles a young girl's harsh life at her new school, as she endures cruel rumours, heartless classmates, and countless social trials. [Written by MAL Rewrite]

Satou Matsuzaka is a beautiful high schooler who has a reputation for being permissive with men. However, a chance encounter with a young girl named Shio Koube makes Satou realize that this is her first and only true feeling of love. Telling others that she lives with her aunt, Satou secretly shares an apartment with Shio. Despite her innocent appearance, Satou is willing to do anything to protect her beloved, resorting to desperate measures to ensure that their "happy sugar life" remains intact. [Written by MAL Rewrite]