Heads or Tails (Patreon)

Aura and Mare have found a strange potion in the secret laboratory of Nazarick's great tomb.

Aura is in a curious mood and decides to throw a coin to see which of her or her brother will drink the potion to see its effects.

The winner discovers that the potion will not only make her body older but also make it grow taller and taller.

Until it becomes gigantic, damaging a little the great tomb of Nazarick.