Ryouko Otonashi

Talent: Ultimate Analytical Prowess

The protagonist of the Danganronpa/Zero novels. Ryouko is presented as a girl with a neurological disorder which causes her to lose her short and long term memories. Because of this, she writes everything down in a notebook, the "Ryouko Otonashi Memory Notebook". While she has lost her ability to form new memories, she still has her ability to remember and learn 'procedural memory' tasks such as writing and reading.

Ryōko is generally carefree, with a "natural cheerfulness". She has a rather eccentric way of thinking, which is not expressed to be related to her disorder. She is said to have a strange laugh. Because of her forgetfulness, she has trouble concentrating and may come across a bit dumb in other people's eyes. She may often appear uninterested and may fail to respond to situations properly.

Due to her memory loss, she feels that she is "uninvolved with the world" - at times she barely cares about anything that doesn't concern her or Yasuke, believing that things have nothing to do with her. She isn't worried about her condition either, because she doesn't have anything to compare to due to her memory loss and she sees her forgetfulness as a part of who she is instead of a disadvantage. A sudden cure would be a bigger worry for her, because it would mean separation from Yasuke.