[You give his extremist ways too much credit and not enough to Seishirou's fucked up ways of displaying affection. Or whatever. He responds quietly but dark, almost dreading.]
Things between him and I will never be amended. [He knows this is what Subaru ultimately always hoped for, and it hurt, really that he thought Kamui was always the one in the wrong when it came to this. He adds, with an unspoken "especially":] Not after this.
And I won't stop being selfish when it comes to you, no matter what happens. No matter what I say now, or later... He knows that. [They can't co-exist for long even without Kiseki's helping sneaky little hand.]