Jigoku Shoujo: Akekazura

In this game, you are a schoolgirl investigating Jigoku Shojo and other mysterious events in your town. It's a solid adventure game, but has very little to do with the characters in Jigoku Shojo, which was a little disappointing. It does require a lot of reading, so if your Japanese is so-so it might be difficult to get through. I only played through it twice, and it was pretty boring (lots of reading). The one unlockable feature, a "Hell Clock" (an alarm clock with Enma Ai's voices and music) was neat, but I wasn't seriously about to use my DS as an alarm clock :P If you're looking for an adventure game with supernatural elements (but nothing too scary for little girls), this game is a good choice, but nothing special.