"Castle", South Korea's omnipotent crime syndicate. One man returns to Korea in order to topple the absolute stronghold that is "Castle". Kim Shin, the Korean-born Russian killer named "Amur Tiger". He comes back to the crime-ridden city of Hoe-Am in accordance with the last will of his mentor, Kang Min-Seong. Kim Shin and his comrades put their lives on the line as they head for the final showdown... What do you think about this manga?