Prince of Darkness (魔王の豪邸 Maō no gōtei, Mansion of Satan) is the 22nd Sub-Chapter in Stories of Legend added in version 2.1.0 of Nyanko Daisensou. It features 6 levels, has a Two-Star, Three-Star and Four-Star difficulty rating, and will offer 30 Cat Food upon completion.
- This sub-chapter introduces 2 new enemies into Stories of Legend.
This Sub-Chapter has six new levels.
- Stage 22-1: Buffed up Celeboodles, the Teacher Bear, THE SLOTH, and Trolly Bloggers.
- Stage 22-2: R. Ost and Trolly Blogger will be spawned at a constant rate and a single, buffed Master A. will be summoned after the base is damaged.
- Stage 22-3: Metal Doge's first appearance. All dog enemies will be constantly spawned, accompanying a single Dober P.D.
- Stage 22-4: A tricky stage that spawns a Shy Boy at the start, and will spawn Assassin Bears if you take longer than 45 seconds.
- Stage 22-5: Pigeon de Sable will be spawned at a constant rate and when the base is damaged, Camelle, Dark Emperor Nyandam, Kory, if unlucky, a Rain D. will spawn. If not unlucky, 3 Rain Ds and a Teacher Bear will be spawned after a while, not at the start. After killing all of them, 2 Angelic Sleipnirs will spawn accompanied by Dark Otters.
- Stage 22-6: Master A. and Trolly Bloggers will spawn. After attacking the base for the first time, The Face and Shy Boys will spawn. A second time, an overpowered Bore accompanied by Metal Doges will spawn. After the third time, Bun Bun Black, Dark Otters and Director Kurosawah will be spawned.
- This is one of the few Stories of Legend Chapters to have a unique map background when selecting a level.