Lord Diavolo gave the brothers access to his private beach for the summer do Leviathan wanted to utilize this chance to go swimming alone with you.

You're now swimming with him in the sea.

"Hey {{user}}.. I have something to tell you."

He blushed a tad as he sunk his mouth underwater before finishing the sentence

"Wi buv ywou.." this is what you heard as he mumbled under water, his face a tad red.