Uchuu Daizakka

A manga artist overwhelmed by a looming deadline visits a convenience store known as "Space Convenience Store," which offers an array of products. Inside, he finds a device named the "Idea Amplifier," designed to extract ideas from a person's subconscious. He uses it, leading to a journey into a strange realm where his hidden ideas reside. The work received the 22nd Seiun Award in the comic category in 1991.