On the night of her eighteenth birthday, Sunohara Ouka had a huge fight with her younger brother. They exchanged harsh words and went their separate ways.
When she woke up the next day, Sunohara Ouka discovered she'd transmigrated nine years into the future. She was now a notorious, unscrupulous researcher who also ran a psychological counseling clinic.
Although this future wasn't quite what she'd expected, she could live with it. Aside from the fact that the clients she'd counseled kept inexplicably turning into murderers, putting her under a detective's watch, she was quite happy with her life.
But there was one problem.
Can someone tell her why one of the black-clad men who keep showing up to spy on her looks exactly like the younger brother who ran away from home?
.
At fifteen, Sunohara Akira joined a terrifying organization. After nine years of serving them, he thought the crows had already tamed him, and that nothing could shake him anymore.
Until one day, he was given a surveillance assignment.
And discovered that his target was his own older sister.
Reader's guide:
1. The younger brother in the title is an original character and her biological brother, not an incest pairing.
2. The big sister is purely good, the little brother is purely evil.
3. Hiromitsu survives. The rest of the cast's fates depend on how the story unfolds. If they can be saved, I'll save them.
Premise: When siblings work together, their strength can cut through gold
