Fun in the sun...

Misty and Serena invited Ash to join them in the water.

He did so.

They splash around.
They swim.

Both ladies ask him to help them float.

He's happy to hold them up by their stomachs, rubbing them all over.

For fun, he has them do it with each other as well.

Misty's hand slips to Serena's breasts.
Serena has the same accident.

You play a game where you pull an unsuspecting Misty under the water while Serena is looking away.

You lock eyes and put your lips to hers.
You share oxygen and stay down long enough to spook Serena.

Both of you pop up and surprise her, grabbing her and pulling into a three-way hug of sorts.

As the sun goes down, you just talk on the shore as you dry off from all of your fun.

Misty and Serena conspire for a moment and talk about a nearby hot spring.
You all agree to go.

They go ahead of you, telling you to wait a few moments and enter when called.

The moment finally comes and you see the pair...

They have switched bikinis, Serena's larger breasts pressing tightly in Misty's previous top.
As a contrast, Misty fits more comfortably in Serena's top.

Their breasts are pressed together quite nicely too.