[The wailing came immediately afterward, crocodile tears spilling over. And even though his voice is hoarse from the copious amounts of crying he'd done earlier - even before he'd come to talk to Shuichi - he keeps the act up.]

So meeeeean! If you wanted to be my owner instead, you should have said so! How could you treat me like this? WAAAAAAAAAAHHHH!

[This is likely much more over the top than what he might do normally, but he's trying to push away his anxieties, his fears, how sick he feels with himself. Doing something that's more "normal" is nice...]