Shin Megami Tensei 3: Nocturne (SMT Nocturne)

How to Beat Ose: Ose Weakness and Strategies

How to Beat Ose
This is a guide to Ose, a boss in Shin Megami Tensei III HD Remaster (SMT Nocturne) for the Nintendo Switch, Steam, and PS4. Read on to know how to beat Ose, Ose's weaknesses, and best strategies against this boss!

Ose Articles
How to Beat OseHow to Beat Ose Ose StatsOse Stats and Skills

Ose Pre-Battle Guide

Recommended Magatama Kamudo Magatama
Recommended Level 25 or higher

Strengths and Weaknesses


None, but Phys attacks are effective in dealing damage.

Ose has no elemental weakness, however using Phys attacks on it and Magic attacks except for Light, Dark, Ailment, Mind, Curse, and Nerve skills are effective in dealing damage.


Attacks Phys
Void Light, Dark, and Ailments
Resist Mind, Curse, Nerve
Support Tetrakarn/Makarakarn, Focus, Sukukaja, Dekaja, Dekunda

Ose uses a multi-target Phys skill, so we advise raising the party's defense whenever you can. Ose can also Void Light, Dark, and Ailments, so never use these attacks at any point.

Likewise, Ose can Resist Mind, Curse, and Nerve, we suggest using these skills at a minimum.

Ose also has a multitude of Support skills. Be extra careful whenever he uses either Tetrakarn or Makarakarn as the damage you afflict him with will repel back to you.

Best Demons to Use Against Ose

Best Demons to Use
Arahabaki iconArahabaki Archangel iconArchangel Ame-no-Uzume iconAme-no-Uzume
Dionysus iconDionysus Loki iconLoki Oni iconOni
Naga iconNaga Amaterasu iconAmaterasu

How to Beat Ose

Be Cautious When Ose Activates Tetrakarn or Makarakarn


Be extra careful whenever he uses either Tetrakarn or Makarakarn as the damage you afflict him with will repel back to you.

Don't Overinvest in Buffing Allies

tetrakarn of our own

You can still buff your party however, take note that Ose has Dekaja which can cancel out all your buffs in a single turn.

Use a buff like Focus or Tarukaja before using a Phys attack. This allows you to maximize your Phys Attack's damage output in the short turns you get.

Use a buff like Makakaja before using a Magic skill. This allows you to maximize your Magic Attack's damage output in the short turns you get.

Don't Overinvest in Debuffs

Ose can activate Dekunda which will remove all debuffs you use on it. You can still use debuffs but be cautious!

Use Tarunda or War Cry to lower its Phys/Magic Attacks. You will take less damage if you debuff its attacks. Use Rakunda to lower its defense, to make it more vulnerable to your attacks.

Alternatively, you can use Fog Breath or Sukunda as these debuffs will decrease Ose’s chance of dodging your attacks.

No Resistance Against Phys Attacks

Ose has no resistance against Phys Attacks, so don't hesitate to use these types of attacks on it.

No Resistance Against Magic Attacks Except for Light, Dark, Ailments, Mind, Curse, and Nerve


Ose Voids Light, Dark, and Ailments skills, and can Resist Mind, Curse, Nerve. However, be comfortable using other elemental Magic attacks as Ose cannot block or counter these.

Have At Least One Dedicated Healer in Your Party

Summon demons that have Dia or Media so your party can restore HP as you move along the battle. This will be ideal especially in situations wherein you have no available Recovery items on hand.

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