First, try to give you the direct and short answer.
Kisscartoon is not legal because it streams unlicensed content for free without any permission of the original filmmakers.
Not only Kisscartoon, instead all of the streaming websites which stream unlicensed movies without any permission is illegal.
That is why Kisscartoon always move to a new domain extension. Because the site always blocked by the cyber cell.
But because Kisscartoon is not legal, it does not mean it is not safe or contains any virus and malware.
The site is safe and does not contain any dangerous virus which is going to attack your device.
But why to take the risk? we will advise to be careful from the mirror sites. There are multiples of mirror sites of Kisscartoon and some of them are made by the hackers to affect the users.
So we will advise you to run a malware scan while using Kisscartoon mirror sites.
What is mirror sites
First ask to Google and try to find the answer.
Mirror website means the complete copy of a website. The only difference between the mirror and original website is the domain extension. The maker of mirror sites copies each thing of original websites such as design, logo, domain name, content and everything else to look like the original.
But all of the mirror sites are not harmful, especially in the case of the streaming website. You will find multiples of mirror website of a streaming platform which are safe to use.
But why to take the risk, to be safe it will be better to run a malware scan while using mirror sites to make you and your device safe.
What is Kisscartoon
Kisscartoon is one of the most popular streaming website to watch anime movies and TV series for free without paying anything as a subscription fees.