Talk:Othinus/@comment-24098614-20181004211406/@comment-31716725-20181012031143

"Ollerus warns that if Kamijou Touma dies here then Othinus will develop into a more frightening monster than anything she had shown thus far, and applies it to Touma as well. Saying that if Othinus dies here, a great change might come over Touma's nature "

She plays important part in first half the NT and her development worked really great in NT9 despite her torturing him repeatedly.

You should try read the LN from NT1-10 before that.