Tokyo Kaido

Kristiania Clinic admits youths with brain problems. Hashi is a young man who causes conflict due to an inability to lie, Hana has repeated orgasms in public, Hideo believe he possesses superpowers, and Mari doesn't acknowledge the existence of any other human. Hashi, despite lacking the understanding of other's pain, secretly draws manga. One day, a young psychiatrist named Tamaki appears, whose wife had gone missing.

(Source: Mangapedia, translated)