Suigin Riku, a destitute student at the prestigious Shinryou Private Academy, surprises his peers with his presence amidst the affluent crowd. Juggling multiple part-time jobs to afford his education, Suigin immerses himself in the online RPG Dungeon Century, where he bonds with a mysterious companion. When the game abruptly ends, Suigin learns that his crush, Rei Riku, and his virtual confidante are one and the same. As Rei vanishes into the virtual realm of Grave Buster, a successor to Dungeon Century, Suigin embarks on a perilous journey into this pay-to-win game to rescue her. In Gin no Guardian 2nd Season, Suigin persists in his mission to save Rei while delving into the enigmatic depths of this unfamiliar gaming universe.