Peek into Markus and the Chief’s working relationship.
Markus hand-picked the Chief to serve as what was essentially his glorified bodyguard, which took her out of active duty and made her very very very very resentful of the Archive, among other things. Going from the fields of war to the esoteric powergames of the Archive, it really felt like a babysitting gig 97% of the time, with the remaining 3% consisting of life-threatening emergencies that could result in her immediate execution if she doesn’t keep Markus alive. It didn’t help that his theatrics mixed with her stiff pragmatism like oil and water.
Ironically, Markus wasn’t even the worst of them— Chief got more than her fill of awful people who use everyone around them as disposable wargame pieces. Eventually, she and Markus figure out they have a lot more in common than they realize.