Sudou was making a deal with Chernobog, under Asami's nose but without his knowledge, and with merchandise and intel he only got his hands on because he worked for Asami.
That cargo was stolen by Mikhail and Mikhail offered Sudou shelter from Asami when the whole situation got out of hand and Sudou got busted.
Chernobog thought Asami had the goods and therefore went after him, Mikhail had not expected that - I don't know if he knew from whom he was stealing and that Asami would get involved.
Instead, he had been trying to weaken Chernobog for a while and might only have gotten the goods to get rid of them.
Fei Long went to Mikhail because Asami had just told him that the enemy (Chernobog) was Russian, and Fei Long was therefore certain, that he would know something about them and would be able to deal with them, if only compensated accordingly.
He went there only with Yoh so no one else would know of whatever deal he would strike with Mikhail, because he very likely anticipated what suggestion Mikhail would come up with.
Even his Baishe men speculate about whether he went with only someone outside of Baishe because he did not want anybody to know.
I see, that clears up my doubts. Thanks for the explanation.ヾ(❀╹◡╹)ﾉ~
I am a little confused about how Mik is involved in all this. Like Sudou was dealing with chernobog and stole goods from Asami, I think. Then that was stolen and so they attacked Asami who then went into FL territory so he was involved as well. Then FL went to Mik to get his help throught the sex deal and he got involved as well. But then why did Mik meet up with Sudou (after being moved from the hospital) ? Is he the third party who stole the goods? If so why?