Eisen held the key in his hand and held it forward with the 'portable shop' wrapped around it. Soon after, the shop started slowly unwrapping until the door stood in front of Eisen. After that, Eisen could properly pull the key out of the keyhole and pushed it into one of his apron's pockets for now.
And as the house was folding open like that so that Eisen could see that it properly worked, the old man looked at the item information for the portable shop.
[Portable Shop]
[Rank – 5][Quality – Perfect]
[Description] A special type of spatial item created by the Omni Craftsmaster Eisen. It takes the form of a two-story house including an unfurnished shop, workshop and living area. It is the size of a regular two-story house in its normal form, but when it is folded up, it is small enough to be held in one hand.
The item was made to be stored rather easily and is activated through the turn of a key while the sufficient mana is supplied.