When Eren released his hand to open the door - Zechs nearly, nearly reached to take a hold of him again. Frankly, his hunger for this contact with a stranger deeply disturbed him, even frightened him. What was he capable of in this state? Was he safe? He'd already harmed enough people when in a more (or less) rational state of mind -

- So he flinched back when Eren reached again. There's a faint tremor, though, in his frame. Like a cat readying itself to pounce.

"You're safer in there without me," Zechs warned in a low, dangerous tone. "If I follow you - I don't want something to happen that you'll regret."