Cloud watched Hojo advance on the woman, who kept backing off. He figured he'd add his two cents in.

"Miss, he won't hurt you. I'll make sure of it." He glanced at Hojo. "I wouldn't trust myself to his care if I didn't believe him worthy of it." That was a little bit of a lie, considering he didn't know Hojo very well at all. "Besides, I'm sure there's worse he could do to you aside from a blood test."

He noticed the woman's journal when she stashed it, which reminded him that he needed to find his from wherever Ansem had hidden it, along with his real clothes. He'd search for them when a little later, after he made sure nothing funny happened with this blood type investigation.