DROP-OFF ASSIST DEVICE

A device (10) includes a processor configured to: issue an alarm when a movement path condition is met and a prohibition condition is not met, the movement path condition being met when an approaching object (200T) of which a predicted movement path (R200) is a path along which the object passes by a door (100D) of the host vehicle (100) is present; and not issue the alarm when the prohibition condition is met, even when the movement path condition is met, wherein the prohibition condition includes a condition to be met when a difference between a distance in a transverse direction from the host vehicle (100) to a stationary object (300T) and a distance in the transverse direction from the host vehicle (100) to the approaching object (200T) is equal to or less than a predetermined value in a case where the stationary object (300T) is present, the stationary object (300T) being stationary at a side of the host vehicle (100).