The BEST episodes written by Masaki Tsuji
#1 - Beyond the Endless Family
Concrete Revolutio: Superhuman Phantasmagoria - Season 1 - Episode 9
The Superhuman Bureau encounters a strange family, who they suspect are completely immortal. Unlike other superhumans, they seem to be attracting unnecessary attention to themselves on purpose, and the Bureau seeks to find out why.
#2 - Devila and Devilo
Concrete Revolutio: Superhuman Phantasmagoria - Season 2 - Episode 4
The human race begins developing the region beneath the Earth's surface. However, the area is inhabited by powerful monsters, led by Queen Devila and her little brother Devilo.