Two years have passed since Kirito landed in a mysterious fantasy world and met Eugeo there. They became elite cadets of the Northern Centoria Imperial Swordsman Academy and train day after day, hoping to become integrity knights, guardians of the order of the human world. Having become elite cadets, Kirito and Eugeo each received a page at their service. Kirito went to Ronye, Eugeo to Chise. The four of them establish relationships and live the full life of cadets and cadets... But human anger gets in their way. Ronye and Tiese fall into a trap organized by the aristocrats. Upon learning of this, Eugeo grabs his sword, but is stopped by his faith in the Church. Suddenly, intense pain pierces his right eye, and he sees bizarre text in a sacred language that he cannot read: “SYSTEM ALERT.”