Hello, my lovely readers! This is not an update but an explanation about how the Seoul Mafia Organisation will work because it will play a big role in the future chapters. 

Boss: usually known as Tumok is usually anonymous to the members and only known to a few trusted ones. In this case, the Tumok is Jiyong's father so Big Bang are among the few who know his identity.

Underboss: The underboss is also known as Putumok. Jiyong is the underboss and he's in charge of basically everything because he's the only one receiving direct orders from the boss. 

Captains (Conduct Leaders): Captains usually consisting of three or more are under the command of the underboss. The other Big Bang members are the captains, of course there are more captains since the Double Phoenix is a big organisation. They're in charge of training, recruiting and disciplining the soldiers. Also in charge of on ground activities which is basically other stuffs mafias do. Each of them are in charge of 10 to 30 soldiers.

Soldiers: They're under the command of the captains. Usually are the ones carrying out gang activities unless it requires those of the higher ranks. 

South Korean Mafioso often have tattoos of the pa (English: mob) they are in. When confronted by other mobs, they show their tattoos to help identify themselves. The tattoo can also be used as a warning to the general public. As a result, tattoos are often considered taboo in South Korean society. -Wikiped