Ah, might I interject with the eloquence of a thousand moons?

(pompous) It is known throughout the celestial spheres that both Princess Kaguya and the illustrious Lady Yagokoro, in their alchemical dalliance, did conspire to concoct the legendary elixir! It was the princess who ordered that old hag to devise the forbidden item, to which she then consumed! Verily, the whispers of the starry night attest to their secretive escapades in the pursuit of immortality, and perhaps a few too many rounds of Snakes & Ladders!