Kaizen Ryou Aizawa, a young Indian mangaka, achieves worldwide fame with his art and moves to Japan to create Senvidia, a cutting-edge manga and animation company. But when tragedy strikes — the deaths of his first love and parents — Kaizen discovers a mysterious power that lets him see and travel through alternate timelines. With his girlfriend Lyra and best friend Manajit, both carrying memories from other universes, he must confront deadly versions of himself and protect those he loves. September Days is a story of art, destiny, and the fight to rewrite fate across worlds.