"What are we doing up here exactly? I rather be arranging drinks for the party-goers downstairs," one man says.

"Like I would know, the boss just wants us up here, just for tonight for some reason. Actually, he's been quite on the edge today. It's like he's going to get killed or something," the other man says, referencing this "boss" as if whoever it was is actually the "Shadow Essence" here.

"Meh. The guy gets drunk all of the time, I'm sure he's just fucking around. but I've got to go to his office and see what's up with him," the first man says the two passing by the hallway that Eren hid in, and they didn't see him.

"Well, I'm heading back down if that's the case. Not gonna waste my time with his drunk ass," the second man says before leaving the area by going downstairs while the first man goes up to a door that could be assumed to be the "boss's" office. Eren would feel a strange presence inside, this office was probably where the Shadow Essence was.
---
Takahisa was still unconscious, struggling to even breath at this point.