BORDER : HAKANAI (儚い) is ENHYPEN's Japanese debut album. Consisting of the tracks 'Given-Taken' and 'Let Me In (20 Cube)' which was first released in BORDER : DAY ONE, ENHYPEN also returned with an original fresh Japanese track titled 'Forget Me Not', which is the opening OST for the newly released Japanese anime 'RE-MAIN'.

HAKANAI means fleeting, transient, short-lived, momentary, ephemeral, fickle, vain and so on.