These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Anvilicious: "I'm seriously disgusted. People care more about wars than the future of their children," but subverted when she tells Jonah that the he needs to decide for himself whether she's telling the truth or whether it even matters to him. Also made less Anvilicious and more, well... weird when you take into account that this is Koko talking.
Base Breaker: Fan opinion was split on the ending, with one side believing it was a No Ending that didn't really resolve anything, while the other side argues that it leaves future events open to interpretation. Others argue that the plan itself was a failure from the start and that the ending was a way of avoiding having to actually having to write it.
Critical Research Failure: The SUVs used in Britain and South Africa are left hand drive, which is not allowed legally in either country.
For season two, we get a new opening song, "UNDER/SHAFT" by Maon Kurosaki, and the return of Nagi Yanagi with "Laterality", the ending.
The appropriately named track for this series from the original soundtrack, played during the first episode of the first anime season—and when Hex and her crew was finished off by a B-52 bombing. Enter: "Jormungand".
"Sense of Crisis" from the Jormungand: Perfect Order OST gives the show a somewhat surreal feel with all the piano music.
Darkness-Induced Audience Apathy: The world is plagued by constant fighting and the main characters are a selfish weapons dealer with a plan to save the world that in reality, would kill more people then it would save, and her group of personal guns.
Ear Worm: "Time to Rock and Roll" by Santa/Taku Iwasaki on the first OST, a catchy mix of rap, techno, and electronica that typically accompanies ass being kicked. Another song on the OST, "Time to Attack", has a harder beat and is the source of "Her name is Koko," which definitely also qualifies it.
Between Valmet and Koko, mostly from Valmet although Koko mentions that she somewhat reciprocates in an unguarded moment with Lehm.
Valmet has Mildo, a Cute and Psycho mercenary who is obsessed with her but Valmet finds her annoying.
Mildo also seems particularly close to Koko.
A little bit between Koko and Schokolade given the way the latter blushes when Koko plays Personal Space Invader. On the whole, though, Schokolade comes off as more of a Cloud Cuckoo Lander than seriously attracted to Koko.
Dr. Miami seems to also be attracted to Valmet calling her "eye candy" when it's suggested to Koko the team could use the hot spring at the Toy Factory they set up in Africa, she also comments that Baburin is surprisingly well endowed.
Strawman Has a Point: Regardless of her methods, it's hard to disagree with Hex when she says that Koko is a threat, and the only way to stop her is to kill her, because she can't be tamed.
What an Idiot / You Have Outlived Your Usefulness: Karen does this when a Daxinghai subordinate panics and fires his assault rifle, revealing their position to Koko's team and spoiling her planned ambush. Karen walks up to him and shoots the mercenary in the head.