LSD

Narushima is an idle, bored and restless guy. He is looking for something that will cure his state of boredom. For that reason, he goes around picking fights, harassing girls, smoking and being a pretty awful delinquint in general.

After catching a glimpse of Natsume, a male prostitute, will be that drug to cure him. Thought of finding that drug come to Narushima throughout his narration.