I'm okay with claimed/bound for either Kei or Kaltz... theoretically, neither of them is human so idk how well those would work.
As for the Aspect reacting...
Kei has killed a lot of people (he destroyed half a city once, it's safe to say there were casualties, and he's also definitely killed both humans and aliens under other circumstances). Also he's possibly (leaning towards probably) the only survivor of a catastrophe that destroyed his home planet (which has been on fire for an unknown-but probably-long period of time).
Kaltz, after dying, became a devil that eats souls/emotions. He's permanently fixated on how he/his girlfriend died. He's also killed people, including those from his own home village.
Unsure how much those count as strong associations with death, but putting them out there just in case.
no subject
As for the Aspect reacting...
Kei has killed a lot of people (he destroyed half a city once, it's safe to say there were casualties, and he's also definitely killed both humans and aliens under other circumstances). Also he's possibly (leaning towards probably) the only survivor of a catastrophe that destroyed his home planet (which has been on fire for an unknown-but probably-long period of time).
Kaltz, after dying, became a devil that eats souls/emotions. He's permanently fixated on how he/his girlfriend died. He's also killed people, including those from his own home village.
Unsure how much those count as strong associations with death, but putting them out there just in case.