I feel l8ke we are really watching their relationship over years of progression also...
DE NILE IS A RIVER IN EGYPT! THIS MAN IS GAY!!
It's honestly hilarious how wilfully delusional this man stays about he's relationship with Mori. Literally would rather die that admit that they are in a relationship. They Literally have been a thing for 2 or 3 years at this point in the story. I wonder when he'll finally be honest.
I just imagine old as professor being asked about his love life and him being like "I don't got time for that." With Mori standing next to him just smiling.
╮( ̄▽ ̄)╭