How to Beat Oyamatsumi

Oyamatsumi is an optional boss in Shin Megami Tensei V (SMT 5). Read on to know the best strategies to use against Oyamatsumi, Oyamatsumi's weaknesses, best demons to use against Oyamatsumi, and the best buffs to use to counter Oyamatsumi, and the most effective strategies to use to beat Oyamatsumi!

How to Beat Oyamatsumi

Cast Tarunda in Every Turn Cast Tetrakarn or Attack Mirror in the First Few Turns Watch Out for Mabufudye After Oyamatsumi Uses Omagatoki:Critical Oyamatsumi Switches to Single-Target Phys Attacks After Using Omagatoki:Critical Take Advantage of Omagatoki: Critical

Cast Tarunda in Every Turn

You should cast Tarunda on Oyamatsumi at least once in every turn to lower Oyamatsumi's attacks. This strategy can help you last longer in the fight as Oyamatsumi will deal lesser damage on your party.

If it comes down to choosing between debuffing Oyamatsumi and buffing your attacks, always debuff Oyamatsumi's attack damage.

Cast Tetrakarn or Attack Mirror in the First Few Turns

Oyamatsumi will always opt using Crusher Onslaught on its first few turns, you should cast Tetrakarn at these times to prevent getting hit with its Physical attack.

On average, Oyamatsumi will deal anywhere near 50% of enemy HP as damage using this skill, and casting Tetrakarn or Attack Mirror can reflect this amount of damage back to Oyamatsumi.

Prioritize casting Tetrakarn or Attack Mirror on the Nahobino, and if possible, your main support demon.

Watch Out for Mabufudye After Oyamatsumi Uses Omagatoki:Critical

Oyamatsumi will switch to using Mabufudyne after it taps into Magatsuhi and activates Omagatoki: Critical. You can use Ice Dampeners or Makarakarn to block Oyamatsumi's Ice attack.

Oyamatsumi Switches to Single-Target Phys Attacks After Using Omagatoki:Critical

As long as you keep debuffing Oyamatsumi's attacks, this should pose as no problem. Keep topping up your HP as you move along, and prepare for when Oyamatsumi uses Omagatoki: Critical again along with Mabufudyne.

Take Advantage of Omagatoki: Critical

This Magatsuhi skill can save you a whole round without having to consume MP. Or you can use it to extend turns so that you can concentrate on healing and debuffing. After you've cast your attack-blocking skills, go all out with your fire attacks on Oyamatsumi.

Best Demons to Use Against Oyamatsumi

Fire-Based Damage Dealers

You should always exploit Oyamatsumi's weakness to Fire. Dionysus is highly proficient in fire and possess Donum Magici which buffs magic-based attacks.

Demons with Tetrakarn

Oyamatsumi relies on its Physical attacks a lot, and will only switch to Ice attacks when it activates Omagatoki: Critical. Demons like Muu Shuwuu, which you can find mid-game, possesses Tetrakarn.

Demons with Tarunda

You will also want to have Demons that can use Tarunda to lower Oyamatsumi's Attack. A mid-game demon like Parvati is valuable as she is also proficient in Healing skills.

Oyamatsumi Stats and Weaknesses

Recommended Level

Recommended Level	Location	Drops
45	Shiba, up ahead the sandhill	Kunitsu Keystone

Oyamatsumi Stats

Oyamatsumi Weaknesses and Resistances

Elemental Weaknesses and Resistances

Status Ailments Resistances

Oyamatsumi Skill Proficiencies

Elemental

Other

Oyamatsumi Skills

Shin Megami Tensei Related Guides

Boss Battle Guides | List of Bosses

All Boss Types

Related Boss Guides
Story Bosses	Optional Bosses
DLC Bosses

Story Bosses

Story Boss Guides
Hydra	Eligor
Nuwa	Lahmu (1st Fight)
Loup-garou	Fionn mac Cumhaill
Lahmu (2nd Fight)	Shohei Yakumo
Surt	Ishtar
Chernobog	Arioch
Abdiel	Odin
Zeus	Vasuki
Metatron	Tsukuyomi
Nuwa	Abdiel
Lucifer	Lucifer (Secret Ending)

Optional Bosses

Optional Boss Guides
Pazuzu	Anahita
King Frost	Thunderbird
Loki	Belphegor
Moloch	Amanozako
Camael	Abaddon
Arahabaki	Khonsu
Fionn mac Cumhaill (2nd Fight)	Baal
Huang Long	Asura and Mithras
Amon	Gabriel, Raphael, and Uriel
Belial	Michael
Inanna	Danu
Maria	Khonsu Ra
Zeus (2nd Fight)	Shiva

Optional Mini-Bosses

Optional Boss Guides
Apsaras	Leanan Sidhe
Shiki-Ouji	Xuanwu
Jatayu	Kumbhanda
Quetzalcoatl	Baihu
The Kunitsukami	Futsunushi
Adramelech	Zaou-Gongen

Punishing Foes

Punishing Foes Guides
Oyamatsumi	Horus
Girimekhala	Hecatoncheires
Chimera	Seth
Bishamonten	Jikokuten
Koumokuten	Zouchouten
Garuda

DLC Bosses

DLC Boss Guides
Artemis	Cleopatra
Mephisto	Matador
Daisoujou	Hell Biker
White Rider	Red Rider
Black Rider	Pale Rider
Mother Harlot	Trumpeter
Demi-Fiend