The signals are simple enough, and while sneaking past maintains the possibility that they'll never know they were infiltrated, this approach leaves no risk of being taken by surprise later. It's the safer choice between the two.

Omi nods silently and starts to sneak off, then hesitates and looks back at Robin. Close combat is a competency but not a forte, and a word now will save misunderstanding later. He opens the flap of his jacket to show the darts he's packed, pointing to them.

"Does not kill," he explains. That wasn't always true, but trading out the lethal poison for a fast-acting sedative was among his preparations just before biking over to invite Robin along. Even without the understood need to honor Robin's moral code tonight, this was a reconnaissance mission only.