"T-Shirt" Isono is a minor character in Shin Megami Tensei: Devil Summoner.
Shin Megami Tensei: Devil Summoner
"T-Shirt" Isono is Tsutomu Kurouri's uncle and Hideo Momochi's colleague, who he greatly respects. When the Police Station gets invaded by demons, he seeks aid from the agency. When the protagonist arrives at the Police Station, Isono initially mistakes him for a demon, but afterwards he explains that he was planning on freeing Momochi from prison.