Skill upgrade materials
Advanced Gehenna Tech Notes from Overpass 5–6
Advanced Gehenna Tech Notes support Basic, Enhanced, or Sub Skill upgrades for Gehenna students. Target them for a specific…
WHERE & HOW TO FARM
Advanced Gehenna Tech Notes from Overpass 5–6
Bounty > Overpass stages 5 and 6; check for Advanced Gehenna Tech Notes.
Before you go
- Clear Normal Mission 3-1 to unlock Bounty.
- Have Bounty Tickets available in the shared pool.
- Plan a Gehenna student’s Basic, Enhanced, or Sub Skill upgrade requiring Advanced Notes.
Farming steps
- Open the target student’s skill-upgrade screen and choose a non-EX skill.
- Read the bill to confirm Advanced Gehenna Tech Notes are required.
- Select Bounty > Overpass and inspect stages 5 and 6.
- Verify the exact school and Tech Note tier in the reward preview.
- Choose a listed stage you can complete and spend a ticket.
- Collect the rewards and repeat while this upgrade remains the ticket priority.
- Spend the Notes on the intended skill when its other costs are covered.
- EX Skills use Tactical Training Blu-rays, while the other three skill types use Tech Notes.
- The shared ticket pool also serves other schools and Bounty sites; weigh those needs first.
Repeat, collect and use
Repeat on days with available Bounty Tickets while this material is needed. The farm is limited by the shared ticket pool. Stop when the planned skill’s Notes requirement is met or another target takes priority.
Common mistakes
- Using Notes for an EX upgrade: check the skill category before farming.
- Assuming a school item appears in every Overpass stage: inspect the selected stage’s preview.
- Farming without checking the full cost: Credits and artifacts may still block the upgrade.
When to stop or switch
Stop once the intended Gehenna non-EX skill has enough Notes; switch to the remaining artifact or Credit requirement.
Sources & fact checks
What you can get here
Open a guide to find other locations and see what the item is used for.