That item is sealed. More info about seals here
Technically, all characters you've made have independent storages and mailboxes.
1st image: It's the "Royal Servant" ice burner costume on which it's ice burners are phased out. So technically you can only get it at the market or to chinese traders and the image you posted there grants you the option to change the color of the costume from brown to black using a color change coupon at the cash shop
2nd image: I think someone
posted some info about this 2 days ago and I also think that someone
. Check it out.