The quest is unlocked after completing the Each Step Like Thunder scenario.
"Master Kohga plans to use an ancient training method in order to achieve his truest, manliest form. The exercise involves leaping over obstacles, so to avoid injury, he needs something floaty!"
"Bounding up and down with the Octo balloons, Master Kohga achieved astonishing heights! He even thought of a special move to take advantage of his new, buoyant physique..."
- Master Kohga: Bonus Combo