Date : from 25th Feb to 10th Mar.
You have to look for a piece of purple cloth.
Each item costs $5L.
There are 2 hunt items from NuDoLu :
1. Russian doll wood pendant (non rigged mesh)
2. Vintage style knit dress *dolman sleeves (rigged mesh)
You can see hints and other shops URL in official site :
TP to NuDoLu main store