Wait, what now? Does she just go to jail and that's it?

Yup, that's usually what happens when you're caught for 3 murders

Actually since its Japan she has a good chance at getting out after a short sentence or parole. They go super easy on minors. There are cases of minors torturing and murdering people and getting so little jail time that your head would spin. Hell, a Japanese man went to France, murdered and cannabalised a young woman, went back to Japan for trial, and has been living out his days making comics about it and selling books about what he did. He's an old man living comfortably now.

I’ve seen a documentary about that guy. He is super creepy!!!! He loves women’s thighsI can’ t believe he’s not in jail

I know, its absolutely insane to me that he is not in jail. What he did was horrible. I watched a documentary too and it flashed pictures of the girl's mutilated corpse. It was so disturbing, I don't understand how justice wasn't served. Its one of the most insane and disturbing cases I've heard of. The other most disturbing case I've ever seen also being at the hands of Japanese men, the torture and murder of Junko Furuta. She was tortured in a million ways and raped over 400 times all in the span of 44 days. If you've heard of that one or look into its details it is the worst thing I've ever read.