The title of this week’s new HBO documentary has a double meaning. The parents of a South Korean baby named Sarang are accused of neglecting her – and charged with essentially starving her – while they immersed themselves in an online role-playing game. Sarang translates as “Love,” and this nonfiction study is an immersion into the world of avatars and “second lives,” and the addictions such a fantasy world can feed. The game the parents play is called Prius – and while the legal defense their attorney offers is dubious, there’s certainly a subject here worth examining.