Looking forward to this campaign!
PSA: When this Weekly Event debuted on PC, Inari’s spawn rate was determined by an unusual method resulting in players failing to encounter it despite an ostensibly 1/12 spawn rate. Hopefully we will not have a repeat of that incident, but keep your fingers crossed, and if in doubt be sure to rotate through all available battles on the map.
What happened on PC
Source: [Not a Bug] "This Fox Rocks" event not working as announced - #30 by OminousGMan
Weekly Events spawn battles in various locations around the event’s map screen, but when this event occurred on PC, Inari only spawned in a single, specific location on the map – no other battle appearing on the map would ever include it:
The specific algorithm was later revealed to operate in steps:
1 - 50% chance of spawning a battle at Inari’s fixed location
2 - If this location spawns, it has a 1/6 chance of actually being Inari’s team
3 - All other locations can be anything else with equal probability (5 possibilities)
Problem was: if the first condition was met but the second wasn’t, and the player never actually battles the team appearing there (e.g. because the battle wasn’t appealing) then the above algorithm would skip straight to step 3 and never spawn Inari’s team at all because the one location Inari would appear in was currently preoccupied by another team. If this location appeared on the map, you HAD to battle it (Inari or not) for the game to repeat the algorithm from the top and possibly spawn Inari’s team.