Chapter Text
Haruko [24] • the lucky older brother, partially part of the only reason his younger siblings are still alive, while he may be lucky, he's not as intelligent as his younger siblings and often loses to them in games.
Sora [18] • NEET virgin, extremely manipulative and intelligent, not a genius like Shiro and partially Mizuki, but can catch up with the intelligent duo with his bluffs and manipulation.
Shiro [11] • a genius with supernatural intellect, incredible scientific calculation and simulation abilities, she's the smartest of the four but is partially incapable of expressing her emotions.
Mizuki [7] • a fast learner, unlike the others, she usually watches her opponents, learning their strategies and using it against them, she may not be in Shiro's level in genius terms, but she's close enough.
Let's begin this story with two families, Sora's and Shiro's.
When Sora was an 8-year-old, his parents divorced and he chose to stay with his father, angering his mother. That was when Shiro was 1, her parents had split earlier, which had caused her to be placed in an orphanage, eventually Shiro's mother and Sora's father met and fell in love when Sora was 9 and Shiro 2, since they wanted to feel closer, they adopted 13-year-old Haruko who immediately smiled at Sora whem they first met.
Sora didn't like him at first, but he did what he did best and faked a smile, hiding the fact that he was empty, not sure if Haruko knew he was. It was one year later, when everyone was finally at ease with each other that Sora and Haruko (and Shiro's) mother mentioned the fact that Shiro existed, 15-year-old Haruko immediately suggested that she be brought home with them and out of the orphanage and Sora, with his bright but faked smiles backed him up.
Shiro wouldn't believe it at first, not like other 3-year-olds would, she took a glance at the boy next to her, saying what the adults wanted to hear but obviously it wasn't what he wanted to say, Shiro hear the older boy call the younger one "Sora" and so Shiro said, "you really are empty" causing a smile, a genuine one, to erupt on the boy's face as he said, "let's play a game!" The older boy hovering over the two of them, watching.
It was one year later, a week after Shiro had turned 4, when their parents announced that they were going to have a child, that their mother was pregnant, Shiro and 11-year-old Sora weren't really interested in it, but 16-year-old Haruko grinned and chuckled, he was excited, he truly was. Of course, not all fairytales have happy endings, their mother died in childbirth and their father was left alone to raise them, the baby survived of course, Shiro had taken one look at the baby and whispered, "Mizuki." And so, that was her name.
Their lives weren't any easier after that, their father did everything in his power to take care of them, evem ignoring his own needs, and so, his life was taken by a terminal illness by the time that Haruko had turned 20. Haruko did all types of odd jobs after their father had died to keep him and his siblings afloat, he took custody of them of course, he wasn't going to leave 15-year-old Sora, 8-year-old Shiro and 4-year-old Mizuki in an orphanage like he had suffered when he was younger, it was a year later when he had managed to get a stable job.
And so, the next 3 years went smoothly, well, as smoothly as they possibly can when you're the [ ] siblings.