Be a good big brother

As he said this, there was a twinge of bitterness in Gu Kai's voice.

He is six years older than Ranran. He still remembers the day when he found out he was going to be a big brother; he was so overjoyed that he ran several laps around the living room.

He rushed over to hug his mother's neck, put his hand on his mother's protruding belly, and joyfully said hello to his younger sister.

For those few months, he would tell his sister a bedtime story every night, informing her that he was her big brother. He promised to be the best big brother in the world, and make her the happiest sister.

On the day his sister was born, he carefully held her as a newborn in his arms. He stood in front of his mother's bed with his father. The four of them posed for a family portrait. At that moment, he felt he was at the pinnacle of happiness.