As an Adopted Child, I'll Always Love My Big Sister

“In this life, I, Luo Xiaofeng, will protect my older sister. She will be my one and only!”

After being reborn, Luo Xiaofeng clenches his fists. He has already experienced the pain of losing his sister in his previous life. This time, he wants no one but her. She is his one and only.

At the same time, he awakens a System that he failed to awaken in his previous life, though it doesn’t seem very useful. Whether it really is useful, you’ll have to wait and see.