Solution - Body Storage

“I must say, the amount of care you take with these things, enjoying them up to the last possible second, is impressive. So, can you pick where you want to burn? For example, could you choose just one part you want to burn?”

“Yes, I can do that quite easily. As proof of that, I have various items such as scrolls and potions stored in my body right now, and none of them are being harmed. I could move around like normal even if I put you inside me, Mistress Shalltear—that is, as
long as you didn’t run amok in there...”

***

Volume 3, Chapter 1.4