This is by far one of the hardest reviews I'll ever have to give!!!! First off, it's it's kinda PG-13 in my opinion except for the big-bang swears(infrequent), blood, and the deadly virus aspect may freak some people out but only in a light degree since not much is shown related to the virus. There's a frightening medical scene as well when they think the man saying his daughter is alive in a sewer somewhere so they declare him with dementia and attempt to drill into his head. He then takes a syringe filled with his blood and holds a girl hostage saying if he isn't let go, he has the virus and can spread it. He goes on a rampage, etc. That and the chaotic opening sequence where the mutant goes on a flat-out rampage killing people(one disturbing scene includes a mob of people trapped in a metal room with the monster screaming "HELP US!!!! AH!!!!" preceding a very violent blood splattering noise and bloody hands clawing to get out, resulting in, yes, blood to be dripping off the sides due to their hands....BLOOD.)The girl is then taken and presumed dead, bla bla bla bla, it goes on and they need to escape, bla bla bla bla, virus, bla bla bla bla, police, death, etc. This story tends to drag on in most parts except for a funny part where it shows pictures of everyone who had died from the mutant in a gym filled with people crying and afraid which is when the family's part comes in and they start sobbing their eyes out, punching, kicking, and so forth until police and people wearing hazmat suits have to take them away!!!! Going further, I'd release a ton of spoilers related to this sorta cheesy thriller. I'm surprised it did so well, but the whole Japanese subtitles and/or dubbing gives it an edge....of some sort. So violence and some language is a factor, but sex and alcoholism are out(very mild). Alcohol and drugs come in only in one part where the father gives the daughter beer and says "Eh, you're close enough to 21, right?" and some other mentionings. Other than that, clean as a whistle. It's an OK flick if you wanna be entertained....for nearly 3 hour(that's a downside). So, yeah, 2 stars in my book. Pros....cons....difficult to really rate it officially. I dunno. Great acting definitely brings it up, as well as the incredibly ending, but as for the kinda lame effects, and drag-on moments....DOWN. Up, down, up, down, oh my god just rent it, it's fine, whatever!!!! :)