This is the official Borderline Collection pre-order. Order the entire series of Borderline here and receive the four books throughout the year (2019). Please see the below details about shipments and when you will receive each series throughout 2019.

Volume 1: Spring, Memory (Delivered May, 2019)
Volume 2: Summer, Time (Delivered August, 2019)
Volume 3: Fall, Change (Delivered October, 2019)
Volume 4: Winter, Wonder (Delivered December, 2019)