I don't think we'll get any more Kaoru content in the anime which makes a little sad because they only showed the fake Kaoru that hides behind her persona. I wouldv'e loved if they showed the Kaoru that cares about her friends and wants to make people happy. Her persona is cool and all but its not the real her. I know Hello Happy World isn't important in the anime but it wouldv'e been really nice just to have that heartfelt moment where Kaoru drops her mask.