Rhi's Arrival and a Radiant World are two new Special Research tasks in Pokémon Go. They became available as part of their annual Pokémon Go Fest. During this event, trainers from all around the world were challenged with capturing tons of Pokémon from different habitats. It was a ticketed event, costing $14.99 USD to unlock access to the full event for the two days. Those who didn't purchase a ticket will have access to the Rhi's Arrival Special Research. Although, the second half of the research, A Radiant World, will only be available for those who own a Go Fest ticket.
Normally, Special Research is distributed by Professor Willow, providing more context surrounding the world of Pokémon. For Rhi's Arrival, a new character from the Alola Region's Ultra Recon Squad is in charge of the quest. Alola will continue to be a trend in Pokémon Go as this current season is heavily focused on Ultra Beasts. These are Pokémon from another dimension who found a way into this reality. There's even a chance to capture one as part of this Special Research.
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Rhi's Arrival will need to be completed first before unlocking access to a Radiant World. It's broken down into three different steps, each with its own challenges and rewards. Clearing all three steps will unlock a Radiant World, but only for those who own a Pokémon Go Fest 2022 ticket. There's currently no other way to unlock this Special Research. It's heavily focused on Nihilego, the first Ultra Beast who made its debut in Pokémon Go.
The Nihilego encounter is obviously the big capture for this Special Research. This Ultra Beast briefly made an appearance during Go Fest Day 2. It only appeared for a single day,
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