My Mafia Lovers (Mobiumshipping)

Within the town of Domino there lies the Mafia's, each divided to a total of three. The Red Eyes Spades, Blue Eyes Aces, and the Black Luster Lycans. There is a safe haven area separating these divisions and anyone from either gangs will be in deep trouble if they decide to cause havoc, inside the Middle-grounds, ruled by Pegasus.
Yami, the leader of the Red Eyes Spades, and Atem, leader of the Blue Eyes Aces, used to have a past but circumstances changed, forcing them apart.
When the leader of the Black Luster Lycans, Heba, returns from overseas with his younger brother Yugi, who is a well-kept secret, return home because of news received of possible overthrow, Heba must return to his old ways while remaining to keep Yugi out of the spotlight of the two Werewolf Lords.
Yugi doesn't understand why his older brother has started acting weird again. They had just returned home from a two year long vacation from Cairo to help with their very sick Grandpa, who just recently had a heart attack.
What will happen when Yugi is discovered by the two Werewolves? Will Yami and Atem ever get over their past and join together to help face a new threat? And how long will Yugi be able to keep his hidden secret?