I'm now getting a rather clear picture of why ninjas are so deadly. The weak or clumsy male shinobi die an early death, while the weak or clumsy female shinobis end up either as sex slaves – or as future wives, as in the present story. Eventually, the only shinobi still in activity are the invisible killers. Everything makes sense now. Well, in "Please Be Patient with Me," we can enjoy the comical blunders of an incredibly clumsy female ninja, who ends up having sex with an innocent boy, and everything ends well.

(Source: Hentairules)