We meet the protagonist (The Girl, 17) working in a dysfunctional kissaten (coffee shop). She has perfect pitch but crippling stage fright. Her only companion is a cracked Walkman playing a loop of Chopin. The world is a cacophony of pachinko parlors and salaryman groans. That is until a rogue DJ (played by a cameo of a then-unknown Beat Takeshi) gives her a mixtape labeled "Do Re Mi Fa."
The climax does not involve a concert. Instead, it is a chase scene through the Shibuya pedestrian scramble (before the statue of Hachiko was a major landmark). The "Do Re Mi Fa Girl" must prevent a corrupt music producer from releasing a digitally perfected "Sol" (the fifth note) that would brainwash listeners into consumer zombies. She realizes that imperfection—the missing note—is what makes humanity human.
To understand the excitement , we must first return to the soil of 1985—a year when the world was drunk on the future. 1985 was the apex of Japan's economic bubble. Money flowed like cheap sake, and technology evolved weekly. It was the year of the NES (Famicom), the first MTV beach-house specials, and the standardization of the CD. Amidst this, the "Do Re Mi Fa Girl" archetype emerged as a counter-narrative to the stoic, untouchable idol.