If Molly knew that he was a Ghostslayer Blood Hunter, he would demand a refund, because excuse you, that is unfair.

What's also unfair is the fact that despite being the one that attacked first, the hands are groping for... He turns to look at Akechi and balks a bit, unable to really comprehend what he's seeing there. He'll think about it later. For now, he's seeing red and that's not just because his eyes are always red.

"Oi! Are you ignoring me?" Molly's not suicidal, but he died once for his friends and he can't exactly just stand back and not jump into the front of the line. Even in death, his time ought to be borrowed somehow. It's just the way it is. You protect your own.