The adventure you’ve been longing for is here. On July 15th, 2043, a revolutionary new virtual reality MMORPG, “Infinite Dendrogram”, takes the world by storm. It features revolutionary systems like the “Embryo”, a system that evolves a player’s abilities to match their actions, personality, and play style, and NPCs called Tians, who are so realistic that you could almost mistake them for humans. After finishing his entrance exams and starting life on his own in Tokyo, Reiji Mukudori decides to celebrate by booting up Infinite Dendrogram, a game his brother has long been recommending to him, for himself…This is the story of a world, or of a game. And it’s also a story of memories.