In the end of manga virgo said that law
teamed up with the straw-hats just to counterat -tack!! the reason he enterd the shichbukai ...... is because he wanted to get to that room . that brat is planning the worst possible scenario inside is head !!!! he want to make a mess of the new world
then manga end with law smiling what do you think he is up to, And is he would betray luffy !!!!!!!!!!