One thing I like about RPG games is that they often have special events and hidden items. It's a little like finding Easter eggs.
I don't know why they often make fun of Siela's not yet fully developed chest area. She is only a little girl after all. Maybe it's some kind of jokes only little boys would understand?
I only learnt today that Siela has a special outfit - bear suit. Have you seen the bear in action? :)