Require 450+ Level!
On Friday, Saturday, and Sunday at 19:55, an announcement is made that Sasuke has detected Otsutsuki chakra in the castle. At 20:00, a teleport appears on the Hokage building roof, allowing entry to the castle.

Boss rotation (20:00 CEST):
Friday — Kinshiki (3 forms)
Saturday — Toneri (2 forms)
Sunday — Momoshiki (3 forms)

The top 3 damage dealers receive rewards with a bonus loot chance, and other players who dealt recent damage also receive rewards.

Otsutsuki Bosses

Outfit	Day	Boss	Loot
Kinshiki	Friday	Kinshiki I → II → III	Kinshiki Bandana Kinshiki Armor Kinshiki Legs Kinshiki Boots
Toneri	Saturday	Toneri I → II	Toneri Sword Toneri Glove Toneri Ring Toneri Necklace
Momoshiki	Sunday	Momoshiki I → II → III	Momoshiki Helmet Momoshiki Armor Momoshiki Legs Momoshiki Boots

Disclaimer:
The times shown in the table are based on server machine timezone (Europe/Warsaw (CEST, +0200)).