Underground business, drugs, guns and weapons trades, sex, alcohol, mafias, gangsta, yakuza, whatever you can name out it's all in here. Enzo Greco a famous Italian mafia lives in the city of Tokyo, Roponggi where most of the yazuka activities happen arounds here opens up a big company but at the same time doing underground business with his allies. Min Yue, a poor rare kind neko, a black neko to be exact, wonders in the streets of Roponggi and making some money at the same time. A twisted family and a rare kind, he is not look up by many people but still struggles because he wanted to reach his dream as a florist. A mafia and a Neko, what will be the faith of these two persons when they meet up? Also, there are side stories of twisted fates with mafia and police, does this sound dangerous or not?