When I Sleep And When I Wake is a sidequest you can find in Star Ocean: The Divine Force just outside the Seaport Of Cotto.
You can find Boy Having Nightmares NPC outside the gates of Cotto. He has been having nightmares about the Soul Reaper Mob.
He wants you to defeat 5 Death Spectre Mors. You can find them in the snowy mountain of Hallowed Mount Galca-Lemthas on the second map. They spawn in the area where your campfire is.
Once you defeat all 5, head back to Boy Having Nightmares NPC for your rewards.
Reward:
- Morale Potion x4
- 10,400 Fol