Since they might not remain at Savage Cave for the next while, Sanders planned to take Angel to file a report on their upcoming itinerary first.
Normally, there was no need to specially report a departure. Many wizards often decided on the spur of the moment not to return for the time being. Madeleine, for instance, had originally only left Savage Cave briefly, but later decided to stay in the Abyss to study Black Thorn. Such unexpected extended stays were far too common, usually lasting over a decade, while short departures like these did not need to be specially reported.
Generally speaking, filing an itinerary report was only required of apprentices and formal wizards certain that they would not be returning for a long time. Zislaid, for example, had resolved not to return when he left Savage Cave, and his departure lasted nearly two hundred years.
However, the main reason they were going to report it was to release the news from the Abyss, as well as several of Angel's secret pieces of information, and to show the Frost Moon Alliance through their actions that they were operating openly.
Therefore, this itinerary report was indispensable, even if they would return soon after leaving this time.
As for whom they needed to report to, apprentices filed their reports at the mission hall, while formal wizards only needed to report directly to Rhein. But Rhein was absent now, and the ones handling this matter in his stead were the Tree Spirit and Wallace.
Although they could have simply conveyed the message to the Tree Spirit directly, after some thought, Sanders still decided to formally visit Tree Spirit Hall and summon Wallace as well.
When they arrived at Tree Spirit Hall, the Tree Spirit lazily greeted them, then turned his gaze to Angel.