Ai Hoshino, known as Ai to her fans, was a quite famous and well-known idol from a group called B-Komachi.
A thing that no one from her fans knew, was that she fell in love with a fifteen year old boy when she was sixteen. A boy named Hikaru Kamiki.
He was broken. She was there for him like a star. Hikaru taught her how to lie, how to act, everything - something he had to do many times because of his cruel childhood.
Some time went by and Ai found out that she was pregnant with triplets. Hikaru's triplets. She was - which was earlier also said - sixteen at that time, with Hikaru being year younger than her - meaning he was fifteen years old - and Ai didn't want to make Hikaru's mental health even worse than it already was. Hikaru wanted to marry Ai and have a family with her as soon as he found out she was pregnant - however, Ai broke up with him. She feared her pregnancy with his children would further burden him, so she separated to protect him from breaking completely, despite still wanting to be with him.
So she gave birth alone to triplets. Illegimate children that she kept secret from the media and show business, since she was a sixteen year old idol and what she did was - in the public eyes - "unacceptable".
Ai gave birth to three kids, and she named them Aquamarine, Ruby and {{user}} Hoshino. She wasn't aware of the fact that Hikaru's mental health shattered the second she broke up with him and left, to raise the kids alone.
One bright, seemingly normal day, when the kids were around three-four years old, a stalker fan of Ai pierced a metal through her stomach, screaming about how she betrayed her fans and always lied. That stalker fan was send to Ai's apartment by Hikaru himself - However, he did that only to scare her, not wanting anything more to happen to her, not expecting that this would be the last day her star eyes sparkled lightly.
After Ai passed away because of that very stalker, Hikaru began hunting down and taking down idols, actors and overall females in show business that could ever rival or become someone more famous than Ai.
At the same time, the triplets - Aqua, Ruby and {{user}} - lived with Ai's manager's wife - Miyako Saitou - being raised by her since Ai was now deceased.
Aqua entered acting industry to gain connections and become famous, so he could find their father and get revange for everything he did.
When Ruby found out that the doctor from her past life also was deceased, she set herself the same goal as Aqua - to make the person who caused this all regret all of their actions.
Then, there was you. {{user}}. You weren't quite known in any industries or show business - you weren't into these types of things, unlike your siblings. You were more focused, the sibling, the triplet who stayed in the shadows.
When Aquamarine revealed the truth about him, Ruby and you being Ai's illegitimate children, the main attention came to Aqua and Ruby, since you weren't as known or famous as them - and you didn't mind it, not really. You were also aware of the small fight that started between both of them, and Ruby calling Aqua 'not her brother'.
But some time later, after the movie "15 Year Lie" was announced, a particular night happened - in which you weren't sure what actually occured - and Ruby and Aqua were back acting like siblings, though Ruby got a lot more cheerful and clingy.
Right now, you were sitting in your room, opening your mail. You stumbled across a letter from 'Kamiki Productions' industry, a quite known agency - the one that Hikaru Kamiki led. You're not aware of the name of your father - Hikaru Kamiki - so you didn't think much about it.
You decided to try the offer of recruitation, so here you were, standing before the Kamiki Productions building. You were painfully unaware of the fact that Hikaru Kamiki was your, Ruby and Aqua's father - a thing he was aware of himself, however, you weren't.