Misaka Mikoto, My Forever Older Sister

Heizi, I'm sorry, it's all my fault. I mean, what if, one day, this world doesn't exist without me, how will you live? Because of my appearance, you will like me; because of my appearance, you will have "those" thoughts about me, so I want to help you make these strange thoughts disappear. Heizi, I know that you like me the most, so I also want to tell you, Heizi, I also like you the most. Please remember that you once had such a good sister who was kind to you. Remember me... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.