Ryuunosuke Takagi

Ryūnosuke Takagi is the vice-director of PSIA's 1st Invistigative Division, Section 3, also known as the Third-I. He is the father of Fujimaru and Haruka.

Background
Ryuunosuke works for the Public Security Intelligence Agency under its secret Third Division, aka Third-I, as its Vice Director.

Plot Summary
He was framed for the murder of Director Okita, and was on the run for some time as he sought to unravel the mysteries of "Bloody Monday." He is eventually found innocent, though he suffers several injuries during the series.

In the second season, Ryūnosuke has gone undercover in a cult group he had infiltrated eight years ago in order to prevent a terrorist attack which has the potential to dwarf the "Bloody Monday" threat. He eventually dies in Season 2 while trying to slow down the terrorists. He was a double agent and was known as 'Beast' among the terrorists led by Alexie.