Mom plucked the hair out of Iria's hairbrush for DNA testing, because we've been looking for a cure for her blood allergy and needed to look into it further.

[ Oria sighs. He feels so anxious about spilling family secrets like this, even though he knows Sinclair is trustworthy. ]

But... there was a time when Sora, Iri's boyfriend, came over for a couple photoshoot at the fancy garden outside. I guess Iri used her brush to fix his hair and apparenrly they were fraternal twins, so they didn't look alike at all. It's... a mess. Iri fainted when she found out.

[ So tldr, Dad is some deep shit for giving a child away, Mom is ballistic about having thought she had TWO miscarriages and that the Dad gave one of their children away (and the fact that he was a SON), Iria (Iri) found that her boyfriend was her fraternal twin all this time, and Oria... well, we'll come back to that later. The least affected person is Aria, and she was too busy trying to keep everyone in line but she's meek and doesn't even have a tenth of Oria's charisma to do what she wants to do to help her family. ]