Because savagery is the only thing that's real in the ninja world, and there's too much and too little to lose. (Or: What happens when your brother is a mass murdering maniac.) Semi SI/OC fic.
Being reborn as Lily Evans' younger sister definitely has its merits, but that's completely overshadowed by the fact that the First Wizarding War is going to start in nine years. And she'll be damned if she lets her sister die. SI/OC fic.
Harry Potter has a twin, but really, he doesn't. And he sure as hell doesn't know if he wants one, if they're anything like the boy who was born with him. AU with canon divergence and Antagonist!SI/OC. (This is labeled as humor but it's really dark humor.)
When you're reborn into the body of Molly Weasley's older sister, you know that you're in for a long ride. At least this time I'll get a life to live to the fullest. SI/OC fic. Semi-crack fic with occasional dark themes.
In which Hermione finds that wishing for a peaceful afterlife is impossible. When Hermione Granger dies, she only wants peace after a chaotic lifetime. But when she's reborn into the body of Ariana Dumbledore, she finds that fate just won't let her catch a break. Time Travel fic.