"Manabu," Mako's saying before he's even close enough to see what's in there. When you see your friend staring open-mouthed into the jaws of another world, you cross the dark street to see what he's looking at, even when you're in the middle of coming home to bring an increasingly-demanding Wu some very specific liquor he'd basically ordered Mako to get for him.

The fresh air is kind of nice—Mako hadn't really realized how long he'd been in their loft—and he was taking it slow on the walk back anyway. There's nothing wrong with coming up to Manabu's side to see what has him so rapt, which is precisely what Mako's doing. Good thing Manabu's small enough that Mako can basically see right over his head.