
Guide on How to Defeat Ose in Shin Megami Tensei III: Nocturne HD Remaster

Ose is a boss enemy faced by the Protagonist in Shin Megami Tensei III: Nocturne HD Remaster. The demon is encountered at the Assembly of Nihilo large sphere room in B15F level.
Ose Boss Information
Here is a breakdown of the boss’ stats, strengths and weaknesses, and skills:
Ose Stats
| HP | 3,800 HP |
|---|---|
| Recommended Level | Level 29 or higher |
| Recommended Magatama | Kamudo Magatama |
| Recommended Party Members | Dis, Naga, Oni, or any ally demons |
| EXP Rewards | 3,800 EXP |
| Macca Rewards | 1,200 Macca |
| Other Rewards | None |
Ose Strength and Weaknesses
| Phys | Fire | Ice | Electricity | Force | Expel |
|---|---|---|---|---|---|
| – | – | – | – | – | Void |
| Death | Mind | Nerve | Curse | Almighty | Explode |
| Void | Resist | Resist | Resist | – | – |
Ose Strength and Weaknesses
| Skill | Skill Effect |
|---|---|
| Heat Wave | Small physical damage to all foes. High accuracy and medium critical rate. Power related to user’s max HP. |
| Focus | Multiplies user’s next physical attack damage by 2.5. |
| Sukukakaja | Buffs agility by 1 level, all allies. |
| Tetrakarn | Creates shields that repel non-almighty physical attack for all allies. The shield lasts one turn or until it has blocked one attack. |
| Makarakarn | Creates shields which repel non-almighty magic attack for all allies. The shield lasts one turn or until it has blocked one attack. |
| Dekunda | Removes all debuffs from all allies. |
| Dekaja | Removes all buffs from all foes. |
Ose Strategies
Here is a breakdown of the battle strategies against the boss:
Equip Kamudo Magatama

Before the battle, make sure the Protagonist or Demi-fiend is wearing a Kamudo Magatama. This Magatama resists Physical attacks.
Be familiar with boss attacks and skills

Make it a point to get familiar with the attacks and skills of the boss. Adjust your strategy when the boss uses skills like Tetrakarn and Makarakarn that only last in one turn. Tetrakarn is a red barrier for physical attacks so you need to hit the boss with magic skills.

While Makarakarn is a blue barrier for magic attacks so you need to hit the boss with physical attacks or skills.
Land Debuffs

Land debuffs on the boss while leaving some MP for healing. Debuffs can be in the form of attack power decrease (Tarunda/War Cry), defense power decrease (Rakunda), and hit/evasion power decrease (Sukunda/Fog Breath). These debuffs can be accessed by demons in your party.
Prioritize on landing Sukunda/Fog Breath first. Followed by Rakunda and Tarunda/War Cry.
Cast Buffs

Cast buffs on your party members as well. Buffs can be in the form of attack power increase (Tarukaja), magic power increase (Makakaja), defense power increase (Rakukaja), and hit/evasion power increase (Sukukaja). These buffs can be accessed by demons in your party.
Prioritize on landing Sukukaja first. Followed by Tarukaja/Makakaja, and Rakukaja.
Boost Attacks

In addition to buffs, you can also use attacks further by using Focus (next Physical and Almighty deals x2.5 damage). This damage buff can be accessed by demons in your party.
Use Phys attacks and skills

Ose does not have resistance to physical attacks so you can damage them with Physical skills. If you don’t have them, just rely on your high-level demons and deal normal attacks instead.
Use Magic skills

Ose does not have resistance to magic attacks so you can damage it with Fire, Ice, Electricity, and Force skills.
Heal Allies

Keep the party’s HP sustained by using healing skills. Especially when other party members are using HP-consuming Physical skills.
| ← Kaiwan Boss Guide | Hell Biker Boss Guide → |
Other Bosses
All Boss Guides
Shinjuku and Shibuya Bosses
| Pretas | Forneus |
| Nekomatas | Specters |
Ginza and Great Ginza Underpass Bosses
| Troll | Succubus |
| Matador | - |
Ikebukuro and Mantra HQ Bosses
| Onis | Orthrus |
| Yaksini | Thor |
| Raidou (Mantra HQ) | Dante (Mantra HQ) |
| Daisoujou | - |
Assembly of Nihilo and Mantra HQ Revisited Bosses
| Koppa and Incubus | Eligors |
| Berith | Kaiwans |
| Ose | Hell Biker |
Kabukicho Prison and Ikebukuro Tunnel Bosses
| Mizuchi | Sui-Ki |
| Trolls | Kin-Ki |
| Fuu-Ki | Ongyo-Ki |
Asakusa, Ginza Underpass, and The Obelisk Bosses
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