Alluka got lost.
After losing contact with Killua in the gray mist of the Dark Continent, she arrived in a strange place the very next moment.
Alluka: Wow! It's a Gundam, just like Big Brother told me about!
Nini: ??????
The result of watching Infinity War and Endgame.
What can Thanos do?! I'll just make a wish with Alluka and you're finished!!
Thanos, go eat shit!!!
That's it!
[No-brainer Thanos bashing. Don't nitpick the details.]
[Anyone can live!! Thanos has to die!!]