with babia as a guest and I noticed bouro didn't come out with sam and modogo during the entrance

Bouro came late, because his entourage said to him to do, so that the people can see that he's the leader of Academia and not Sam Tshintu

So are Bouro and Samilo still friends today?

yes,bouro has been guest to a couple of sam concerts in kin and was even  meant to visit sam again but it happened to be the day he decided to return to quartier latin instead