Hello from the 90s

A dark, shadowy figure with glowing eyes and sharp teeth appears in a black void, then the scene cuts to a female anime character with long black hair and a red and black outfit, wielding a long weapon, moving dynamically through a bright blue, light-filled environment. The sequence continues with a stylized "FLOW" text animation, followed by the character in a dark, forest-like setting confronting a swirling, ethereal blue energy form, then a rapid, blurry action sequence in a red-lit environment, and finally a chaotic, red-lit scene with indistinct shapes and bright lights.