My Yandere Elder Sister

"Junior brother hasn't smiled in ten years." "Sister, dead people don't laugh." "How did he die?" "Ten years ago, you killed him with your own hands." Chen Qixiao, who accidentally traveled into the body of his dead junior brother, was so frightened that he did not dare to open his eyes when he heard such a conversation. It turns out that the senior sister is actually a yandere? In order to protect the reborn junior brother, the senior sister will give her whatever she has, including skills, spiritual elixirs, magical weapons, and body. At the critical moment, just say "Senior sister, save me!" Even if the senior sister is far away, she can still arrive at the right time and save the protagonist's life.