2 things to note here: 1. Parkour pursuit stole my friend's system (which include the legacy system) and the anims too 2. Dont worry the main scripter (my friend) of serenity is making another game which isnt based of reborn and is also alot better and smoother (im also the main animator)
Yes, I believe it was created because the owner didnt want to wait for reborn, it was inspired by legacy but i guess could be considered a concept for reborn