Infinite Dendrogram Vol 1 - The Beginning of Possibility Light Novel

Infinite Dendrogram by Sakon Kaidou. A Fantasy light novel rated Teen, published in English by J-Novel Club.

College student Ray Starling finally dives into Infinite Dendrogram, a virtual reality game said to offer limitless possibilities. What starts as a chance to play alongside his brother quickly turns into real adventures, battles and bonds in a world that feels anything but artificial.