Zoombieverse - Memory 2: The Knife

The darkness of the past catches up to the present and looms over the future. The now-grown undead god meets someone from his past for the last time in his infinite life. An ancient artifact that unlocks a hidden ability comes into his possession and will stay with him throughout his infinite life.

Excerpts:
Hearing that title broke him from his mental preoccupation. _Oh, no. Not her. Not with these people._ Glancing around the table, he saw that everyone was looking at him, overtly and covertly, watching and waiting for his reaction.
...
The young god stood up in excitement. _It just talked to me! I'm talking to it! This is so weird. What else can I ask it?_
...
_What should I say? I should say something, right?_ "Umm... Hi!" he managed to say. He stopped himself from wincing at his awkward greeting as he felt every eye in the room on him and maintained a casual and relaxed facade. _'Hi'? Really? After not seeing her for so long, all you can say is 'Hi!'? Say something else._ "I came here to see you." _No, idiot. Say something less obvious._ "And, uhh, talk to you." _What's wrong with you, self?_
...
"I don't know. I don't really know what to do anymore. I've done terrible things to him but I don't know anymore if I did the right thing."