Below is a walkthrough for the After the End III side mission in Ghostwire: Tokyo. To obtain this quest, you must first complete the After the End II side mission then travel to Toyoi Shrine. Answer the pay phone ringing nearby to begin the quest!
Head to the location specified by KK
Follow the road south to find Erika next to the fence overlooking the highway below.
Follow Erika’s psychic trail
Use your Spectral Vision (press square) to follow her. Eventually, she’ll lead you to a building. Enter it!
Search the area
Examine the keychain on the desk then defeat the enemies that spawn.
Tell Rinko what you found
Exit the spirit world then follow the objective to the pay phone and answer it. Afterwards, the quest will complete.
Rewards:
- Meika x3,000
- Outfit: Taiko Drummer
- Approx. 500 Spirits