# 510 Words
This is a sticky one. The Supreme Enclosure gives Hunger's own promise that he will answer if he is "called" to defend something for a day. However, the nature of that "call" is pretty ambiguous. The fact is that we do not currently have a way to reach the Astral Realm, and we certainly do not have a way to return from the Astral Realm. For our favor to be valuable at all, Hunger cannot be called to defend something that he cannot access.
That leaves two possibilities. The first, which I personally find more likely, is that the thing which Hunger must defend will be delivered to us. We'll be given an artifact, or a baby entity, or some other horrible thing that Hunger must defend from interference or heroism. This would add complications to whatever business we have going on at the time, but does not remove Hunger from the board for a full day.
The second possibility is the one that everybody else seems to assume is going to happen: the thing to be defended will be located in the Astral Realm and Hunger will disappear for 24 hours. But in my opinion this use of Hunger's favor is unlikely for two reasons. The first is that if there's something to be defended, putting it in the Human Sphere inside the influence of two Rings of Power, an Armament, and the Chosen One is possibly the safest place in the local multiverse. The second is that (absent knowledge of ADS) the Astral Denizen has no way of knowing that Hunger's abilities are equally powerful in the Astral Realm. A favor from a progression-type cursebearer is a powerful asset. It would be foolish to risk wasting that boon.
Suppose that Hunger absolutely is going to be teleported away from the party, and that the Nightmare Flight ability is not able to bring our companions along for the ride. In this case, Hunger's Silver of Evening really might be able to apply to the summons. The argument would be that Hunger's promise is being used in bad faith: Invoking a favor from an ally and leaving them stranded in a new universe with no way home absolutely might count as a hostile effect. This charge would hinge on whether the Nightmare Flight is able to return Hunger to the Human Sphere after his favor is repaid. If not, there's (maybe) some legalistic grounds in objecting to the call.
More likely, imo, is that we'd have a snap decision to make: which 4 companions would we drag with us for 24 hours? My guess would be that bringing Verschlengorge to the Astral Realm would be a mistake, so instead I'd expect a favor to summon Hunger, Aobaru (his squire), and Gisena (his administrative assistant). If the favor is invoked while we are still in the VR, Aeira can hide Versch. If the favor is invoked while we are in the Human Sphere, Letrizia and Versch will be busy anyway. Maybe Aeira will come along in that case.