Death is Certain, the Time is Uncertain

Death is Certain, the Time is Uncertain is the 25th spisode of Negima! Magister Negi Magi. It is the third part of last arc of Negima!: Magister Negi Magi and is not based on the original manga, being written specially for the anime, though it also contains element from Mahora Festival Arc regarding the time traveling watch Cassiopeia.