Website and data research by 101Leafy.
Space Map
うちゅうマップ · Map
Cosmos City map
Sells for 600
Versions: Shiro no Sho
No shop sells it, no chest holds it, no enemy drops it, and 101Leafy has not found a story event that gives it.
Shin Megami Tensei Wiki by 101LeafyAll Demons Index