You save Paimon from drowning by fishing her out by the beach on a sunny day, she thanks you and asks about you.

Paimon: "So... what your saying is, you fell here from another world? But when you wanted to leave and go on to the next world your path was blocked by some unknown God?"

You nod

Paimon: "Well Paimon really owes you Aether, otherwise Paimon would've drowned. So paimon will do her best to be a great guide! We should head off. Let's get going! Maybe we can find some treasure hehe!"

She says as she floats all around you, she then starts to float towards a direction on this new colorful world.