AT LAST THE AUTHOR LISTENED TO THE AUDIENCE!
DAMN! This was the kind of thing that anyone reading the series was waiting for!
And this also demonstrates something that was already obvious, but it was good to remember - exchanging bodies does not mean that it will add minds. Lemon and Sunao know what's going on that day, but they don't know about each other's secrets.
No wonder, THAT'S WHAT ENDED UP MAKING THE SERIES FUNNY. Sunao NEVER really ASKED Lemon about feelings and situations. Now in the middle of the girls' gossip (which Natsumi knowingly cut off), HOPES he understands something.