Two potential lovers.

Ash looks at Misty and Serena.

He could make them his sluts...but he has a personal attachment.
Are they still his friends?

As such, he has them hypnotized to believe that his Mom's outfit and behavior is normal.

He also has them feel attracted to him...and each other.
They want him and are happy to have fun together too.

They wake up and smile at Ash.

He suggests that they go to a private beach.
They smile and agree.

They swing by their place and grab some attire to wear.
They promise to show Ash their outfits when they get there.

Misty and Serena lead Ash to a lovely location and then toss off their outfits.

What a sight.

He sees how they look at him.
He also sees how rub up against each other, enjoying their flesh touching together.