Second link of firefox's results after looking up "mangadex" looks like a pretty obvious fake because iv used the site before, just posting this to let yall know if you couldn't tell if you stumbled upon it yourself but it dosnt seem too harmful as there are no login pages or anything (marked as nsfw because of the ad in the corner but it really isn't nsfw)
ARE THERE ONLY 2 W-S??? So that site is only World Wide now?
that's a subdomain name with "ww."