[ Actually, Kakashi did need to hear him say it, because saying the words helps him parse out truth from lie. And in this case, regardless of what Loki may have done in his previous life, Kakashi's certain that he must truly cherish his lover and family here in Luceti. ]

Mm, so you'll join to protect your lover and family. [ And yourself. ] Would that dedication extend to the rest of the civilians here in Luceti, too?

[ The ones who can't protect themselves? ]