Kuranari Takeshi

A university student that has come to LeMU with friends for a day of leisure. He's separated from his friends... and entangled in a horrifying string of events. His personality is usually outgoing, optimistic and sometimes emotional.

From Walkthrough by Denethor0

In the 2034 LeMU incident, Kaburaki Ryogo (the "Kid" of the 2017 incident) takes the role of "Kuranari Takeshi" for a grand plan.
He is 32 years old, but he's physically 20.