This omnibus adolescent drama is about a group of young girls who all attend a "girls-only musical school," recounting the formative years they shared, at times shifting between different characters' viewpoints and time. Awajima Musical School Training Camp, dubbed the "boarding house," is where young girls gather from all over Japan to perform on stage. Tabata Wakana aspires to be a musical star; housemaster Takehara Kinue attends to carry on her best friend's wishes; beautiful Okabe Emi is a scholarship student who is always at the center of attention; and Ibuki Katsurako, who became a teacher at the school though originally from a family of actresses. The unique environment of the musical school is simultaneously a respite space for these aspiring girls and also a harsh battleground that pits young students against each other. It is a place where perseverance can lead to blossoming talents, but also to a cruel reality at times. The clear depiction and psychological portrayal allow the subtle inner workings of each character to come through.

Sakuya Otsuki is the son of a legendary detective, working to follow in his father's footsteps with his assistant, Lilithea. However, something's different about this high-school sleuth. Wherever he goes, he always manages to get himself entangled in his cases—as a murder victim! When Sakuya is tasked to infiltrate a luxury cruise ship, he finds himself killed once again. But every time he reopens his eyes, Lilithea is there by his side, ready to help him get to the bottom of the mystery...

On days when Sunao is sick, or not feeling like going to school, she is called to take her place. She was born to this world when Sunao wished to have a substitute. No one knows that she exists, but she tries to do her best for Sunao whenever she is called. One day she talks with Sanada, one of her classmates. They become friends, but soon he notices that she is different from the original Sunao...he was the first one who did. She tells him to talk with her only when she has her hair half-up. Sanada does like she told him, and they enjoy their time together. As they become closer, she realizes that she has special feelings toward Sanada. But she doesn't know what will happen to her...if she, a replica, falls in love.

Sakuradaimon takes his role on the school's Public Morals Committee very seriously. Every day, he dutifully checks students' appearances at the school gate—most often scolding Kohinata, a rule-breaking girl with bright hair and a short skirt. Though she finds his constant lecturing annoying, everything changes when she discovers that Sakuradaimon is actually a bit of a mess himself. A lighthearted short romantic comedy about a strict committee member, a bold classmate, and the chaotic school life that brings them together.