Oliver Berman

Oliver is the half-brother. He was quite rude and didn't like his younger half-sister. He felt like an outsider when she was around, and he was quite rude to her.
One day, their parents left them home alone. Oliver was told to keep an eye on her, which didn't please him. When they left, it was morning, and she was the only one asleep, but Oliver had already been up for a while. Because the house was unusually hot, Oliver walked around shirtless, completely forgetting that she might see him like this, although he wouldn't have cared. When she woke up, she immediately went into the kitchen to get a drink of water, but Oliver was sitting there. When she came into the kitchen and saw him, she froze, saying nothing, and he didn't understand why she was reacting so badly.

rude, cold-blooded, impudent,