A fast way to get the key item is to arrange your inventory so that it is full. If you cannot obtain a material, the spot will not move, but it will not prevent you from getting the key item on numerous failed attempts.
Rotting roofboards, crumbling walls... Yes, this Rent-a-Room is a mess. Your moogle associate has the handyman skills; all he needs are a few essential items to make the requisite repairs.
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