As I know that hentai filter can be activate easily (and so the opposite action).
Kissmanga is blocked in my Country, as it has profanity and nudity content.
So you could maybe think how to solve the imminent problem.
The competitor could easily report the site to our law enforcer, and believe me they will block this site.
Yes, you can use VPN or some DNS changer (*ehem* DNSCrypt), but it will add another layer of entry barrier.
I was a kissmanga user and really, I am not that persom that sensitive to ads, while their pop-up ads are unacceptable, the main reason I do not want to access kissmanga again because a simple reason: accessibility.
I wrote that my country love to block lots of sites.
I literally can't access kissmanga from my mobile carrier without using VPN.
And the only sole reason I am using VPN is reading manga... which is rudiculous.