Board Thread:Questions and Answers/@comment-43580355-20191206002814/@comment-26907577-20191206005101

You must have defeated Omega Flowey since your last True Reset in order to initiate the Alphys date quest. The Neutral Route on which you defeat him does NOT need to be Neutral-Pacifist; however, the second requirement for the Alphys date is that you befriend Undyne on the Pacifist-In-Progress, and therefore this route must have no EXP. The point of completing a Neutral-Pacifist, to many players, is that it allows you to jump right into it: By reloading your SAVE, you skip the part where you do a whole 'nuther route and Undyne gives you a phone call.