In 2043, <Infinite Dendrogram>, the world's first successful full-dive VRMMO, was released. Alongside its capacity to perfectly simulate the five senses and numerous other impressive features, the game promised players a realm of infinite possibilities. Nearly two years later, Reiji Mukudori, a soon-to-be college freshman, finally manages to purchase a copy and begin playing. Assisted by his experienced older brother, Shuu, and his partner Embryo, Reiji sets off on an adventure within the world of <Infinite Dendrogram>. What exactly will he discover and encounter in this game world, renowned for its incredible realism and boundless potential?