I wondered if it had to be done there or that they went there to look at tablet with EMS.
So the main purpose for them was to go to the tablet to summon the reaper. Could you link that page (from normal scans, cause the others cant be linked I understand).
It makes it all more interesting for sure

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The Uzumaki need the Uchiha tablet for some Jutsus, the Uchiha need senju DNA.
It would be best if they worked together for the greater good, rather than stealing from each other, to get what they want (like Hashi DNA).