Its a good website for anime but it may direct you to sites and pop-ups which may be dangerous but all you have to do is leave the site immediately and your all good, there also may be inappropriate ads in the website but it doesn't really interfere with the anime quality. I have watched anime here for over a year and nothing bad happened so far so I'd say it's pretty safe.
Upon opening it, it led me to a pornographic website which then had a pop ad that would ask to install an extension. Popads extension did not prevent the pop ad.
Luckily I didn't have the virus downloaded.