Black can play ...e5 anytime he wants here. an eventual fe5 can be met with ...Nfd7 or ...Ng4 (depends on white's setup).
That said, its impossible to suggest a line without knowing your intentions. If you expect by playing the KID to castle short, then playing ...d6 and ...e5 and after that going for a "crushing" attack on the kingside, then you are employing the wrong opening. The KID is way more versatile than that... factly, that wild kingside attack plan happens only when Black is positionally much worse, using generic strategical elements of evaluation, and so he has either to attack, or die from suffocation.
Hello everyone, I wanted to ask how I should play against the opening mentioned in the topic.