I’m the Brave Puppy Who Came to Save the Villainess Sister

The Courageous Puppy on a Mission to Rescue the Villainous Sister · I’m The Brave Puppy That Will Save The Villainess · 악녀 언니를 구하러 온 용감한 강아지입니다 · Angnyeo Eonnireul Guhareo On Yonggamhan Gangajiimnida

My name is Coco. I'm a wonderful puppy with fluffy white fur. "If there's a next life, please be born as my sister's daughter. Okay?" I had a happy dog ​​life with my sister and crossed the rainbow bridge. ...Why does everyone hate my sister?' No! My sister's happy life is protected by a brave puppy! ...And so I crossed the rainbow bridge again and was reincarnated into my sister's family as a five-year-old adopted daughter. But becoming close to my sister isn't easy at all. "Don't call me 'sister.' You're not my sister." It's okay if my sister doesn't recognize Coco. This time, I'll approach you first. "I just wanted to be close to Chloe." So, can you be close to me again? (Source: Kakaopage, translated)