I don't know if it's intentional or not, but when you have sex with kaede and she passes out in the dojo she says konbanawa, which doesn't fit. it should be oyasumi, but seeing as how she's also the only character who uses any japanese, and seems a bit cringey level of using it in english like an anime club otaku in high school, i really just couldn't tell if it's honest mistake, or intentional characterization.