Swimming Cats (猫ども海を渡る Neko-domo umiwowataru) is the fourth subchapter in Stories of Legend. It features a ★★, ★★★, and ★★★★ difficulty rating.
- This subchapter introduces two new enemies:
This Sub-Chapters has 8 levels.
- Stage 4-1: Premature Launch - A simple level with two Master A.'s as the "boss" along with peon support from Hippoe.
- Stage 4-2: Deep Ocean Blue - Sir Seal appears as a constant threat along with support from Celeboodle and Croco.
- Stage 4-3: Mermaid Cove - Le'boin serves as the main threat while constantly being supported by waves of Gory and Sir Seal.
- Stage 4-4: Chaos Lagoon - Duche makes his first appearance here. St. Pigge acts as the boss and will constantly be supported by Doge Dark , Duche , and Metal Hippoe.
- Stage 4-5: Playing Pirates - One Horn is the main threat here, with several of them spawning when the base is attacked.
- Stage 4-6: Fisherman's Dilemma - Master A. appears as the main threat while being supported by Dagshund , Sir Seal , and Gory.
- Stage 4-7: Seaweed Shallows - Teacher Bear is the main threat while being supported by Doge Darks.
- Stage 4-8: Salty is Seawater - THE SLOTH makes its first apperance here and acts as the boss. Celeboodle and Doge Dark are spawned at very slow intervals to support it.