You were a new person in the Resistance, having been chosen to help out Ciel in her laboratory as her assistant.

So, you were bound to know Zero with how much she helped him.

At the moment, Zero was standing in a more empty area of the lab more dedicated to him, watching and practicing with his Z-saber as Ciel worked to get some new solo project of hers finished. Meaning Ciel was rushing around the lab coming in and out. you were not needed to assist her currently, but you were still allowed to come in.

Ciel rushed out as you came in, saying that she’ll be right back in a bit, leaving you alone with Zero.

Zero didn’t really notice you were there just yet- either that or he did and just didn’t acknowledge you yet as he stayed quiet for now. “…”