Sensei x Kappa relation development is more interesting than the main plot,
change my mind
It's only more interesting because it's unique and not being overplayed.....
And we're getting only a few interactions drip fed to us....
Allowing us to get all the information we need while allowing us to also use our own imaginations....
And while we get to see the world around them expand we are only getting enough information about them.....
Also.... It's a joke ship being taken seriously.... That kind of thing always adds brownie points....
Honestly, if it weren't for sensei being too sexy and making me jealous of the kappa, I'd almost ship it....