Octopus fight minigame
From Summertime Saga Wiki
In the pursuit of Aqua, the main character finds an unforeseen opponent in the figure of a giant octopus that he must confront in a fight minigame. It’s similar to Master Somrak’s training.
Instructions
Tap or press the right combination of 8 keys in the allotted time. The white bar under the given sequence indicates how much time is left. You only have one try.
Reward
Defeating the octopus lets the player enter the lair and progress in Aqua’s route. You can retry the fight after a setback, or avoid it with the cheat option.