>Magical girls? That involves saving the world from monsters, having cool transformation sequences, and pulling off flashy magical attacks, right? I'd be interested in joining, but I'm still very hesitant to get into D&D...
Yep. Although, really, beyond the transformation sequences, it's not all THAT different from how D&D itself tends to work. We'd probably be using a system that's a bit more involved on making characters, because you have to work a lot of stuff out, and there's no classes and levels. But, it'd still be D20.
And if you're really put off just because of one bad session where a few bad die rolls ended in a character's messy death, well...I'd suggest speaking to the friends who introduced you to the hobby and express your concerns. If the guy running the game doesn't usually do that, aside from calling the dice where they fall? I'd say give it a shot. If you are really worried about what might happen to your character, even after talking with your prospective GM and fellow players, you might want to sit things out for a while or just decide not to play. That's better than playing, but not enjoying yourself for any reason.