User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-15860919-20130920200144/@comment-15860919-20130921221224

Bianca was reborn, yes, but Luke is most likely still in the underworld, and we don't even know if he gets the option to be reborn, it never says he makes it to Elysium, maybe the ghost judges sent Luke to the field of punishment for helping Kronos rise, but he did also kill Kronos, so he could be in Elysium, and also it could balance each other out and he would end up in the fields of asphodel