According to ESRB, this game contains: Blood and Gore, Violence
Parents will want to take Genji's Mature rating into consideration. There is a fair amount of blood and guts in the game and if you're sensitive to that sort of thing, this is probably a game to skip. It's not GTA, but there is a lot of hacking and slashing going on.
Onimusha fans will definitely want to check this title out—the similarities to the Onimusha franchise are well documented, but gamers who couldn't get enough of the three installments of that series will fall in love with this game.
Casual gamers will also find a lot to enjoy in Genji. The short play time ensures that this is a game that any gamer on a schedule can still beat and the gentle difficulty curve provides constant challenge without ever becoming frustrating.
Deaf and Hard of Hearing gamers will miss out on Genji's gorgeous Japanese music, but since the dialogue is all in Japanese, everything is fully subtitled.