Ninth Inning, Two Outs
Working with Enokida the information broker, Lin establishes that his sister’s killer is the Mayor’s son Yusuke. Having obtained information about the next human trafficking deal, Banba and Lin form a plan. Lin will pretend to be merchandise and attempt to reach the killer. But the enemy learned of their plan. Lin’s last ray of hope Banba is brutally killed by someone known as the killer of killers. Lin now finds himself in a difficult predicament.
Aired 02/02/2018EP 4 - Ninth Inning, Two Outs

Hakata Tonkotsu Ramens
At first glance, the city of Fukuoka seems like a peaceful one, but under the surface, crime is running rampant. The city's Hakata ward is home to the professionals of the underworld: professional killers, detectives, informants, professional revenge seekers, those skilled in torture, and more. And according to urban legend, a "killer of professional killers" has shown up in the city.
(Source: Anime News Network)