大学受験を終えて東京で一人暮らしを始めた青年・椋鳥玲二は、受験勉強の終了を記念して、かねてより兄に誘われていた世界的に人気のダイブ型VRMMO＜Infinite Dendrogram＞を起動する！ 話題沸騰の激熱バトルファンタジー、待望のコミカライズスタート!!

In the year 2043, Infinite Dendrogram, the world’s first successful full-dive VRMMO was released. In addition to its ability to perfectly simulate the five senses, along with its many other amazing features, the game promised to offer players a world full of infinite possibilities. Nearly two years later, soon-to-be college freshman, Reiji Mukudori, is finally able to buy a copy of the game and start playing. With some help from his experienced older brother, Shu, and his partner Embryo, Reiji embarks on an adventure into the world of Infinite Dendrogram. Just what will he discover and encounter in this game world known for its incredible realism and infinite possibilities?