"Actually, you have never loved me..."
This was the last thing Qi said before he died, but she didn't hear his reply: "I loved..."
Having lived in a world full of blood and war for so long, every time I desperately completed a mission, it was just for him. She clearly had supernatural powers that could easily destroy that small world and go to another world, but she gave up because of him and became the killing tool of the S organization. Before her master died, he gave her all the things he had collected throughout his life, including that one. He wanted it to protect Qi, but he didn't expect it to be known by others and harm Qi.
In fact, she may not be a waste, she may actually be a genius, but there is no way, she must become a waste, at least before she comes back, that her is the other half of her soul... After being used as a punching bag by the third sister, her weak body finally couldn't stand it anymore, and her soul fell into a temporary coma. Only after the half of her soul came back, could she wake up...
The author's copywriting is useless, don't criticize it
In fact, it was just a dark, cold-blooded and funny killer who traveled back to his own body and turned that world upside down...