Gu Yuanyuan, the Beloved Sister by the Whole Universe

(The middle and late stages involve fantasy and lightheartedness, mainly comedy + no abuse in the whole text + group love + the heroine has a three-year-old mentality)

After traveling through time, Gu Yuanyuan became a three and a half year old baby.

Daddy has all the power in the world, and mommy is very protective of her children.

The only bad thing is that various reborn people who come to seek revenge on 'Gu Yuanyuan' begin to appear one after another around him.

The reborn bosses raised their banners high and were determined to destroy Gu Yuanyuan and avenge their hatred.

But, when the silly little baby appeared...

Scheming elder sister: This little idiot is mine and no one can take him away from me.

Cold little brother: I will give Yuanyuan whatever she wants.

Yandere little brother: Anyone who bullies Yuanyuan deserves to die.