The «Sleeping Knights» was a small guild whose intention was to defeat a floor boss and have their names engraved on the «Monument of Swordsmen». In reality, they were a group of terminally ill patients who are utilizing a new FullDive technology. It was originally led by Ran, the sister of the second leader Yuuki. There were originally nine members, but by the start of Mother's Rosario they were only six left. At the end of the novel, they disbanded the guild after the death of their second leader.
- Ran - (1st Leader, Deceased)
- Konno Yuuki - (2nd Leader, Deceased)
- Shiune - (Sub-Leader)
- Clovis - (Deceased)
- Merida - (Deceased)