The people reviewing this and thinking the point is the ecchi are watching it wrong. The absurd and contrived ways to accidentally get the teachers to iku was some of the funniest stuff. Creative and absurd, and that was the point. Also, the undertone is very wholesome. These are generic tropey characters and backstories, but it undeniably feels rewarding to see them get together and confess their feelings for each other. Dismissing this series as smut is a disservice. It is smut, but it's also so much more. Give it a try with an open mind if you have the sensibilities for it.