Sea of Tuna is the seventh sub-chapter in Stories Of Legend.
Moderate in terms of difficulty. It's even worse when you know that Bore and Master A. appear in this subchapter, so be prepared. Cave Fillet is probably the hardest level in this subchapter, where Nyandam and Bun Bun combo up. They mess up newer players' line easily since their frontlines aren't usually strong enough.
- Stage 7-1: Red Tuna Coast - Dark Emperor Nyandam (400%) appears as boss, Doge Dark as support.
- Stage 7-2: Fresh Wharf - Two Master A's appear together at the start. Hippoe and Those Guys horde as support.
- Stage 7-3: Blue Ocean - Two Kang Roos and Otta-Smack-u horde at the start, and then continue spawning at a mild rate.
- Stage 7-4: Carapaccio Waters - Bore makes his first appearance, with Gory and Hippoe spawning at a mild rate.
- Stage 7-5: Economic Sea - Hordes of Metal Hippoe and Dagshund spawning at a mild rate.
- Stage 7-6: Tactical War Tuna - Two THE SLOTHS support enemy units like Doge Dark.
- Stage 7-7: Frozen Tuna Front - Troops of Master A., St. Pigge the 2nd (Red), Metal Hippoe (Metal), Dagshund, Duche, Celeboodle, and Doge Dark (Black).
- Stage 7-8: Cave Fillet - Teacher Bun Bun and Nyandam combo as boss, with One Horn (Red) and Pigge (Red) as support.