Sephiria Side Bag guide: unlocks, swaps, and boss kits
How to unlock and use the Side Bag as a deliberate reserve for boss kits, inactive artifacts, and Chapter 6 preparation.
How to unlock and use the Side Bag as a deliberate reserve for boss kits, inactive artifacts, and Chapter 6 preparation.
2 sources · step-by-step guidance · video walkthrough
Side Bag is reserve space, not a second junk pile
Use it for items that solve a known later problem: burst damage for a boss, a defensive effect for a hazard, or a tablet line you cannot activate yet. Keep the primary grid readable.
Before taking an item, decide whether it belongs in the active route or the reserve. That one question prevents the bag from becoming an untracked inventory.
Unlock and verify the chain
The public reference connects Side Bag access to Destiny Inscription. In your current save, capture the node, the unlock prompt, and the first time the extra storage is available.
If the condition changed after early access, label the old path as historical and keep the current UI wording in the main instructions.
Swap before the boss, not during the panic
Make the swap at a safe checkpoint before the final room. Choose one burst item, one survival item, and one effect that completes the intended grid; leave everything else out of the boss kit.
Use this guide in a run
- 01Find the first checkpoint
Start with the permanent node or prerequisite that opens the route.
- 02Follow the prompt
Use current NPC and Journal wording instead of a remembered quest name.
- 03Confirm the unlock
Capture the moment the weapon, bag, or system becomes usable.
- 04Label old routes
Keep early-access conditions visible as history when they no longer reproduce.
Before you commit to this route
- List permanent node, quest trigger, objective, and confirmation
- Use the exact current UI wording
- Mark an old route as historical if it fails
- Do not invent a percentage or hidden condition
Quick answers
What does this Sephiria guide cover?
How to unlock and use the Side Bag as a deliberate reserve for boss kits, inactive artifacts, and Chapter 6 preparation. Start with the answer block, then use the table or checklist to apply it during a run.
Is this Sephiria information current?
This page is marked 1.0 reference and updated 2026-08-14. Historical community notes are labeled; exact values and unlock conditions should be checked against the current Journal.
Where should I go next?
Use the related guides at the bottom to move from this progression answer into the weapon, build, chapter, boss, or system page behind it.