The Obi Demon

Datai (Daki)

Datai shares the waterfall cave beside Windy Peak with Gyutai. She carries Obi Manipulation's last move, her outfit and a hair ornament, the Golden Kanzashi, each at 5%.

One creator calls her gear the best health set for bulwark builds; that is an opinion, but it is why some players farm her without the art.

The Obi Demon Datai: Datai's Outfit x1 (5%), Golden Kanzashi x1 (5%), Obi Charge x1 (5%) struck Missing Obi Manipulation.

Health: 3,000
Chest: World Events Chest
Per kill: 1,000 Exp, 450 Wen
When: Day and night

Datai's side of the cave

The same cave as Gyutai, behind the waterfalls just east of Windy Peak.

Teleport to the Windy Peak shrine and head east.
Pass the torii and the stone wall, then walk through the waterfall curtains.
Datai stands a few steps from Gyutai inside the cave.

A player walking toward waterfall curtains in a rocky pool — The way into the cave behind the waterfalls beside Windy Peak, where Gyutai and Datai spawn.

Kanzashi, outfit and Obi Charge

Item	Chance	Kills for a 90% chance
Datai's Outfit	5%	45
Golden Kanzashi	5%	45
Obi Charge move scroll	5%	45

Obi Charge is Obi Manipulation's ultimate. The umbrella some players expect from her is not hers: it drops from Fujiko.

Clearing her for the full set

Three drops at 5% each: one player needed 50 to 60 kills for the full set, though the scroll came in the first two.
Kill her and Gyutai together on every visit; both reset after a countdown seen at 4:5x, so about five minutes.

The umbrella mix-up

Does Datai drop the umbrella?: No. The Bladed Wagasa comes from Fujiko in the Final Selection Plains corner.

On video

How To Get OBI Manipulation Demon Art + DAKI Boss Location In Project Slayers 2
The walk from the starting village to the waterfall cave where Datai stands.

Other demon and world bosses

The eight Hashira, from Obari to Gyorei, are the Slayer side; all of them are side by side on the bosses page with its drop odds calculator.