The problem is...and if you've talked to Reborn...the situation with Mukuro is very...weird. You see, in our world, he's in a high security prison and won't be let out.

[ a long pause again, because tsuna knows the real reason he's there, and it's why tsuna feels bad for mukuro.]

Chrome is kind of a medium, usually, for Mukuro. She's our Mist Guardian, along with Mukuro.