Boss: Ch22-4 (Anastasia)

Additional Guides

Enemy Layout

Drops	Eternal Ice x1 (300%)
Rewards	Holy Grail x1 Eternal Ice x5 Heretical Yaga x1

Note: If Mash Kyrielight is brought to this quest, she must use the Orthenaus Spiritron Dress.

Tree of Emptiness Orochi
	HP	152,189
	LVL	90
	HP	251,899
	LVL	90
	HP	325,369
	LVL	90
	Class	Rider
	NP Bar
	NP Type	AoE
	Actions	Up to 3 per turn
	Traits	Human (Attribute), Super Giant, Threat to Humanity

Active Buff 1		Aging: Increase own DEF by 50%. [Unremovable]
Active Buff 2		Growing: Increase own Buster Card Resist by 50%. [Unremovable]
Break		Aging Purge: Remove own [Aging] buff. Increase own Critical Strength by 50%. [Unremovable]
Break		Growing Purge: Remove own [Growing] buff. Increase own Critical Rate by 50%. [Unremovable]
Skill 1		In the Air: Apply Ignore DEF to self (3 times).
Skill 2 (After Break)		Castle in the Air: Increase own DEF by 20% (3 turns).
NP		Halation: Apply Ignore Invincible to self (1 time). Deal damage to all enemies.

The final fight of the first Lostbelt, the Tree of Emptiness Orochi is a gigantic form which is capable of doing both single-target and AoE damage with its normal attacks. It comes with 3 HP bars, with each HP bar being higher than the one before it.
Orochi starts off with unremovable Buster Resistance Up and Defense Up buffs, which makes it especially tanky at first. This tankiness will begin to decrease as the fight goes on, with the Defense Up buff going away at first Break (replaced with a removable Critical Damage Up buff) and the Buster Resistance Up buff at second Break (replaced with a removable Critical Rate Up buff).
It is important to note that Orochi’s NP bypasses both Invincibility and Evasion, and its skill also allows it to bypass defense buffs. Still, the damage it deals is not that high, and should be tankable for a healthy party.
After the first Break, Orochi also gains a skill which increases its defense for 3 turns. In general, this can be seen as a discounted version as its initial buff, and it can easily be outweighed by use of offensive buffs.

Non-Buster Assassin damage dealers are recommended for this stage. Jack the Ripper is a particularly excellent pick, as her NP possesses a Defense Ignore effect, and she can also remove Orochi’s various other buffs. Ryougi Shiki (Assassin) is also a good option for similar reasons.
While bringing a Caster-class damage support is beneficial, the boss’ Rider class, AoE attacks and Defense/Invincibility Ignore makes it hard to reliably sustain them. As such, it is recommended to bring at most one of these, with Zhuge Liang being the preferred option thanks to his high NP Charge capabilities.
Due to the above reason, Osakabehime is a very good support option for this stage, especially if a Quick-oriented damage dealer is brought along.

Note that these videos are not affiliated with GamePress, but showcase some lineups that are effective in clearing the final challenge. These can serve as a good reference for how to rotate skills during this quest or simply to have a look at the encounter before diving in.
- Generic clear with Jack the Ripper
- Clear featuring MHX and Shiki