I don't think there's anything wrong with the brother! I loved him from Secret XXX, he's a good guy. What I think he's trying to do for Minato (and Shizuma) is to get them to realize their feelings. They're both miscommunicating because they're too afraid to reach out to each other and I think older brother is encouraging them to break that bad habit and speak. He's giving the brother a choice– rather than taking it away like how it's implied.
I don't think there's anything wrong with the brother! I loved him from Secret XXX, he's a good guy. What I think he's trying to do for Minato (and Shizuma) is to get them to realize their feelings. They're both miscommunicating because they're too afraid to reach out to each other and I think older brother is encouraging them to break that bad habit and speak. He's giving the brother a choice– rather than taking it away like how it's implied.