Mm, that depends on what it is... usually these things come intuitively, so it may be better to simply bring you along for a variety of situations until your ability triggers. Once we know what it is, we can try to trigger it intentionally to see what other uses it might have.

Don't worry about it too much, Roxas. [and now he can go back to being a coat with his own body inside it. Add picks his jacket back up with Dynamo.] Even if your ability is situational, a shinki has more uses than a simple tool. You're far more valuable than you could imagine.

[... more so than Add can even speak of. He falters, emotions surging up his throat, but he forces himself to swallow everything back down. There's so much he wants to say right now, to tell him, to apologize for... but it's impossible. If he says even a little too much, it could kill him. He has to keep acting like they're strangers.

It takes a little longer this time for Add to collect himself. He clears his throat, slipping his jacket back on and decidedly pretending that weird pause never happened. He doesn't look at Roxas when he speaks.]

There's something else I need to do. [a lie. He already found Ain, so his business here is done. He just needs a moment alone to make sure he's not going to do anything embarrassing in public.] I'll come back to pick you up in a little while, so you can do whatever you want until then.