For real though, just giving someone a good morning really brightens up their day. Unless your relationship is really shitty with someone, if you see them on the regular, a simple good morning goes a long way.
Does it? I dont think you are perverted enough, you need to understand the degree of depravation this world has, so I suggest you further corrupt yourself by reading this depraved manga again. Geez innocent people these days! They cant grasp depravation well enough!
I think the teacher saw sou as more of a "chicken that lays golden egg" than a walking wallet. She just need him attend the school long enough to earn her the moolah 😆