"Maya is in jail? Why?" Having been down here since being knocked unconscious by Minako, this is the first he's heard of it. The only things she could be accused for is... but that's preposterous!

Hiroshi is both surprised and a little torn by Maria's decision to help him. Considering only she and Minako knew where he was, Maria is almost certainly going to end up on Minako's list for this. But he can do a lot more to help free than captured -- and among those things is to try to protect Maria from any more bad things.

So he nods to her before unlocking the manacles. He stands up, circling his wrists. "I suppose a piggy-back ride is the least I can do for what you have done for me. I need you to stay close to me though, Maria. Minako -- or Venus, or whoever she is at this point -- will almost certainly frown upon your actions." Even if he can't prevent other deaths, he can at least try to save the youngest. He positions himself to allow her onto his back.