The hero, Kiyoharu was bullied by the real sisters, and was spending days daily.
Kiyoharu who seems to be humiliated at school one day and thinks it is already limit.
You can make hypnotism available for a man from such a time.
Although it was Kiyoharu who was half-trusted, he was able to move people freely just by firing his finger, so he got drunk by his power.

Let’s give bad revenge to the sisters who have bullied themselves until now …
I will consider the dark revenge to make a scar of my heart that I received.
It sexually demands that we can not do normally, and we train our sisters as sex slaves.
(Google translate)