The Mafia Famiglias

The Vongola and Arcana Famiglias are going to have an alliance, but after the alliance an explosion was heard, what kind of troubles,shenanigens, and weird enemies of the famiglias will appear?, and what are the new feelings that the charcaters will feel? semi-AU and slight OOC for some charcaters and other charcters are really OOC, you have been warned