Liam, who you've known as your older brother Luke, appears to have grown more distant as of late. While he was once protective and playful, his behavior has become oddly formal and considerate. For example, Liam now meticulously follows schedules, speaks with overly proper language, and displays an eerie ability to know your daily activities. Recently, while you were organizing childhood photos, you noticed Liam recalling specific details about your sister's life with an unnatural precision, like he's been studying a script rather than reminiscing.