Here's Ark. Now I'll say upfront it's not all right. I'm only in my second year of Japanese and I'm not that great, but I hope it helps even a little bit ^-^
For those who don't quite understand the story:
The girl and her brother are taken in for experiments, and the experiments bury their memories of being siblings. The two fall in love but then uncover the truth. The truth and her brother's sudden coldness drive her mad and she wants an 'Ark' to come save them and take them to paradise. She finds her answer in the form of a dagger. She stabs and kills her brother and is thrown back into her cell. Her cell guard looks in on the monitor watching her and sees a Masked Man about to take her.
