It was interesting but with this chapter you can feel so much cliche that it makes me want to drop it. Hope everyone else can continue to enjoy it.
But some stories are just overused super dense MC who is lucky pervert. An obvious harem plot with the obvious main female lead who will do nothing and still win the heart of the MC just because they made a childhood promise and never met again. A super sexy sensei who is lustful and ditches her responsibilities to her pupil who is super clumsy but probably really powerful when she gets serious.