Norleon wrote: I don't know, they are in Tenten's possession right now, aren't they?
The Kohaku no Jōhei is presumably still in Kumo's possession. Only weapon that seems to have gone missing is the Shichiseiken, the other three (Benihisago, Kōkinjō and Bashōsen) are in Tenten's possession.
All I could think about is her being bored at work, looking at the tools and wondering for a moment how they were created and used by the sage. She then yawns and turns around bored while we have the anime dudes granting us a tool flashback. Something like that.
Possible, though she may already know about where they came from (someone else could have informed her about them?). I just think that the series has never really explained these tools properly or given a real backstory and one could be useful or interesting. I can't see them just "appearing" out of thin air, like how are they the "Treasured Tools" of Hagoromo anyway? He must have created them at some point, or asked for them to be made.