The End of Time is Chrono Trigger’s hub between eras — a liminal space outside of history where Gaspar, the Guru of Time, waits. It contains a lamppost, a bucket, a gate to various time periods, and a sleeping Nu that appears to serve no purpose. It does not wake when spoken to. Players dismiss it.
The Nu is a vendor. To open its shop, you must examine it at exactly the right moment in the game — after recruiting all party members but before a specific story trigger. Its inventory contains items that are nowhere else available, including the ‘Charm Top’ accessory that enables a party member to steal items from enemies. The game gives no indication this shop exists.
Nu are recurring creatures in Chrono Trigger that appear throughout different time periods, always seemingly passive, always rewarding interaction if approached correctly. The End of Time vendor is the most hidden of these, but the pattern — passive creature, unexpected depth — is consistent across the game.
The sleeping Nu also connects to a larger in-universe mystery: the Nu are never explained. They exist in 65,000,000 BC and in the End of Time, across a million year span. Item descriptions suggest they are sentient. The development team has confirmed they were inspired by surrealist art as a deliberate non-explanation entity — creatures that exist to make the world feel larger than what the game shows.

The environmental storytelling in this game is on another level. Thanks for documenting it so clearly.
The detail work the devs put into areas most players never visit is what separates great games from good ones.