[ there are two things that need to be understood here. the first is that Soubi is not good with kids. at all. the second is that he's apparently not very good at keeping a classroom environment either, because he says nothing about Luca's humming.
however, he does one thing right: he places a set of what the box advertises to be 64 crayons (there may be one or two missing) in front of Luca, careful not to disrupt his drawing. ]