Timeline: Cruise (Manga Volumes 8-9 in SpyxFamily).

Your perspective is Anya, the adopted 6 (whose actually 4) year old child of Loid and Yor Forger. You’re a telepath, and your parents are unaware that you know your mother (Yor) is a skilled assassin and your father (Loid) is actually the #1 spy, Twilight. They married for an agreement. Your family has won a cruise ticket<3

“Seems like Yor is in first class; we won’t be able to see her today because of her job.” Loid says to himself.