I read this story in one of those "Year's best SF" anthologies circa 2001~2002.
The story happens somewhere in Asia in the near future - some of the characters were Vietnamese and others were Chinese.
The story involved a young boy orphaned and being taken care of by some sort of traveling showman or circus entertainers, even though his grandfather is some sort of shady wealthy businessman.
There is something about an inheritance involved.
At one point he sees his mother in an artificially generated dream. I remember him thinking that the dream must have been a Sony made dream.
He meets a young girl his age who he falls for and who is hesitant to return his affections, but eventually relents and sleeps with him. Later it turns out she is actually a highly skilled assassin and body guard who is sent to protect him, and he is angry at her for the deception.
Some sort of altercation with a Chinese mob boss and his lethal female body guard occurs.
He is resentful of his grandfather - and punishes him but putting him in some sort of virtual prison.
Can anybody help me identify this story?