As Lupus approaches the fountain, the sword begins to glow. The light shines even more the closer he gets to the fountain, until it's almost blinding.
Reaching it, the light begins to die down. As he stands there, confused, a voice begins to whisper to him.
My name it whispers Is Alwin Nutt. I was a soldier during the Infection Event decades ago, and in the aftermath my soul was sealed within this blade to save my life. I brought you here because I want to help you, but I don't want Rasul to know. He blames himself for what happened to my body... I don't want him to think of me as suffering. So wield my blade - it's all I have left. Fight and I will help you. And maybe eventually I can finally face him again.
A flash of a face appears in Lupus's vision quickly. It's smiling knowingly.
How does that sound to you, boy?