The PlatinumNumemon’s Jewelry side mission in Digimon Story Time Stranger is one of the more lighthearted yet rewarding optional quests in the game. It brings players face-to-face with the mischievous Bearmon brothers and a rather slippery Ultimate-level Digimon lurking in Central Town’s underground waterways. This walkthrough covers how to unlock the quest, complete every step efficiently, and make the most out of the rewards it offers.
How to Unlock PlatinumNumemon’s Jewelry
You can unlock the PlatinumNumemon’s Jewelry side mission once you progress to the On the Shores of Another World main mission. However, you must also complete the Between the Worlds side mission beforehand. Once both conditions are met, you’ll receive a Digivice message from Big Bearmon inviting you to join their jewelry hunt.
Unlock Requirements:
- Main Mission: On the Shores of Another World
- Side Mission: Between the Worlds (must be completed)
- Client: Big Bearmon
After receiving the message, head to Central Town: Downtown (West Side) to find Big Bearmon standing near the alleyway entrance leading to the Spiral Waterway.
Step-by-Step Walkthrough
Step 1: Meet Big Bearmon
Talk to Big Bearmon in Downtown Central Town. He’ll explain that he and his brother are planning to retrieve PlatinumNumemon’s jewelry and ask for your help. Accept the mission to begin.
Step 2: Enter the Spiral Waterway
Follow the quest marker and crawl under the fence near the alleyway to enter Central Town: Spiral Waterway. Once inside, you’ll find the Bearmon brothers cornered by a group of Geremon.
Battle – Geremon x3
- Type: Virus / Mollusk / Champion
- Weakness: Fire, Electric
- Resists: Earth, Steel
To win easily, bring Vaccine-type Digimon such as:
- Agumon – Fire-based skills
- Biyomon – Electric attacks like Thunderfall I
- Tentomon – Great balance of speed and accuracy
Geremon often use Hyper Smell, which lowers your SPI and can cause Paralysis. Keep some Paralysis Recovery or Vitamins handy.
Step 3: Gather Clues at the Tavern
After the battle, the group automatically returns to the surface. Head to Central Town’s Tavern (Warrior’s Watering Hole), located on the northeastern side. Speak to Deputymon, who’ll provide a vague clue about the missing jewelry’s location. Despite his misleading hints, this step is key to triggering PlatinumNumemon’s spawn later.
Step 4: Search the Spiral Waterway Again
Return to the Spiral Waterway through the same entrance. Go all the way to the bottom room in the dungeon—even though you won’t see PlatinumNumemon there, entering this area activates its spawn trigger.
Now, backtrack toward the entrance of the Waterway, and you’ll finally encounter PlatinumNumemon near the first chamber.
Step 5: Battle PlatinumNumemon
Boss Fight – PlatinumNumemon
- Level: 18
- Type: Virus / Mutant / Ultimate
- Weakness: Water, Earth
- Immune to: Electric
This fight can be tricky due to stat debuffs and Poison inflicted by PlatinumNumemon’s attacks. Use Vaccine Digimon like:
- Gomamon – Water-based skills for consistent damage
- Monodramon – Strong Earth-type abilities
- Tapirmon – Decent durability with healing options
Tip: If you’re having trouble landing hits, build enough CP to unleash a Cross Art: Burst for guaranteed high damage.
Step 6: Make Your Choice and Claim Rewards
After defeating PlatinumNumemon, you’ll obtain PlatinumNumemon’s Jewelry. Head outside and speak with the Bearmon brothers.
You’ll have two options:
- Give the jewelry for free – Ends the mission normally.
- Trade the jewelry – Receive the Aura Skill Disc, which grants access to a valuable party-wide healing ability early in the game.
Recommended Choice: Trade the jewelry for the Aura Skill Disc, as this healing skill is usually locked behind later-game Digimon like Angewomon.
Mission Rewards
| Reward | Quantity |
|---|---|
| Money | 3,000 Yen |
| Anomaly Points | 45 |
| CRT Attachment I | 1 |
| Courage Point I | 2 |
| Optional: Aura Skill Disc (via trade) | 1 |
Battle Strategy Summary
- Use Vaccine Digimon throughout both fights.
- Bring status recovery items for Paralysis and Poison.
- Enter the bottom-most Waterway room before backtracking to trigger PlatinumNumemon.
- Trade for the Aura Skill Disc for long-term value.
The PlatinumNumemon’s Jewelry mission is a short but rewarding detour that deepens your connection with Central Town’s residents while providing valuable early-game items. Though the Bearmon brothers may seem mischievous, their antics lead to one of the best healing skills you can unlock early.
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If you’re looking to 100% complete Digimon Story Time Stranger, this mission ties directly to several later side quests, including “The Mighty Bearmon Brothers”. Completing it now ensures smooth progression through the later chapters of your adventure. Play Now!
