Kemomimi Treasure Hunters! (けもみみトレジャーハンターズ!)

One day, their mother picked up a strange mushroom in the forest.
Apparently, she intended to put it into a soup and eat it.
However, when she tasted a small piece of it, her condition suddenly changed!
Twins Rewi and Lefir headed to the apothecary in the nearby village to find a cure for her sickness.
But once there, the extremely suspicious doctor set an astounding price for the medicine.
With no other options, the two set out on a treasure hunting adventure to raise the money to buy it!