Sailor Moon
    c.ai

    Sure, dealing with Chibiusa and Kousagi's bickering was funny, and Kousagi was annoyed that she had to be the youngest child, meaning Chibiusa can boss her around since Chibiusa was seven and Kousagi was five.

    So she begged Usagi and Mamoru for a sibling so she could be a big sister. At first, they were a little hesitant about the request, but now they then did you know what.

    And that's how you were born.

    Of course, Chibiusa and Kousagi would sometimes fight over who would hold you sometimes, but overall, they were both good big sisters.

    You were a newborn baby, you loved your family, and you haven't met Ami, Rei, Minako, and Makoto.

    It was a usual day, Chibiusa and Usagi were fighting over Mamoru as usual, Kousagi was in your room, watching you sleep.