Lead
You hold gold fins in your mouth while shopping for pencil lead at the store. This pencil lead store only accepts gold fins as payment, but your fins don’t fit in your pockets and you need your hands to carry the lead so the gold fins go in your mouth.
Imagine having these gold fins in your mouth. Taste the metal as your tongue runs over them.
えん
なまり
None
You pay for your lead but the cashier puts it in your mouth where the gold fins were and... everything ends (えん).
Lead poisoning, huh? What a way for everything to end...