Unless Mukuro brought back some demons from hell, he's getting his ass kicked. Even wtih Dino, I still don't see why he's so strong, Mukuro can't stand up to Byakuran. Where does Mukuro even pop up from anyways?
I can't said about the story since I only read up to the part where Shouichi finished telling about Byakuren.
But I got to say Hitman Reborn is one of my favorite manga and anime. I started to get interest when Tsuna first enter hypermode but too bad the anime doesn't look impressive (the mangaka might need to add the fighting atmosphere more deeper in the anime) like the manga, still it also great since they have a social no fighting life period before entering the next fight.
the story is becoming a mess and there's also this "new" girl M.M.
M.M is not new she was around the time when Tsuna first acquired his X-Gloves
(The girl with the microwave flute thingy who was knocked out by Bianchi.)