[@Kafka Komedy] Reminder that you don't become a vampire by having a vampire for a parent, though such a being might well inherit their nature if they were already evil before becoming a vampire. Milo would need to have put on the Stone Mask to become a vampire himself. That, or Roy kills him and uses his vampire blood to vampirise him. Also, you've got your timings screwed up; 1985 is when the 「Event」 happens, and since Milo is only 17, he wouldn't have been born until 1999, since the game is set in 2016. That bears being blunt about.