While the revolutionary discovery of Advanced Dive Virtual Reality (ADVR) lead to the birth and trend of VRMMOs, 18 years old Hayate Palmer only cares about his future for his younger brother rather than living out his fantasies in a virtual world. However, when Kazuki convinced him of playing Isekai Online, he decided to give this trend a try for his brother's sake. Yet what they don't know is that they are stepping not into a life-or-death or some kind of world-changing prophecy, but a special adventure that discovers the life of the game's AI and their brotherly love. (Cover drawn by me) (Also available on Wattpad!)