It's true it's true! One can never argue about cosmetics in the first place, I think. [ More like even if they did argue he'd make sure to persuade them otherwise! ]

Ah? A surprise....[ He'll offer a quick nod. Ooh?! A surprise!! ] Okay okay! I'll leave it to you, Kashuu! Don't disappoint this saniwa! [ Of course, he agreed to not peek, but that wont stop him from trying to take a veeery sliiight glance. Look he's excited to see what the surprise is! So he's trying to be as discreet as possible about it. ]