Okay, it's pretty clear at this point that Sensei's suicidally dense. Why else would he be doing these things, given what he should know about the situation?
Ah yes, giving a gift of equal worth back to Yuzu, but of course, that gift is probably something worth more than sensei realises, in the eyes of Kivotos, that pass is worth more than all the money in the world, as Midori's gaze can attest to.
Probably worth a lot to Gematria as well, except to Beatrice.
