Those who greatly dislike that Aria of Sorrow's main character isn't related to the Belmont clan whatsoever can safely relax, because the powerhouse known as Julius Belmont enters the stage in the relatively short run of this Castlevania installment.
Julius is only available to those who have completed the main quest, but unlike Soma Cruz, Belmont can't go through walls or use other fancy tricks like that. Being very upset about it, he hops around the castle madly, producing almost inhuman sounds with every jump.
The improvement of 61 seconds came from these new movement techniques and better boss fights.
Note: this movie starts where a main quest TAS left off. We do not usually accept movies beginning from a save. Please read our rules to see our reasons.