[ erwin searches levi's face a moment, but he's apparently satisfied by whatever he finds there. the question seems to startle him slightly though, and he shakes his head this time, certainly not offended but a bit surprised. he's aware that other vampires can have many at once, but he's always been... ]

No. I never have more than one novice at a time. If I'm going to help someone, I'm going to do it right, without any distractions.