A certain villain cried and ran to a certain maniac who loved his sister, "Brother, he bullied me."
"Then, do you want my brother to help you bully him back?" "No, I want to instigate a certain heroine to rebel and leave him without a wife."
"Okay, brother supports you. With brother standing behind you, you can do whatever you want."
The protagonist is a maniac about doting on his younger sister. As long as it is his sister, he will dote on her unconditionally~!
Want it?
Even if you want it, I won't give it to you!
Because he is me!