Arezu feels a great deal of responsibility as a warden, and because of this, she tends to try to solve problems all by herself.
Arezu will first be encountered shortly after finishing Obsidian Fieldlands, where she will be enamored by Jubilife Village as well as making a stop at Beni's shop for potato mochi. After the player has obtained the use of Ursaluna, Adaman and Kamado call the player and reveal that Arezu's Noble Pokémon, Lilligant, was now in a frenzy, and that Arezu had concealed this information in the hopes of solving the issue by herself.
When the player searches the Crimson Mirelands for Lilligant, Arezu will be found after spraining her ankle alongside a basket of balms she had prepared for quelling Lilligant's frenzy. After being scolded and treated by Adaman and Calaba, she directs the player to Lilligant's location at Brava Arena. Following the calming of Lilligant, she moves into Jubilife Village as an assistant to the local hairdresser though she continues her occupation as one of the Diamond Clan's Wardens.
After the player calms the Noble Arcanine, she will make requests to see a Misdreavus, and later a Kirlia. Completing these requests will inspire her and expand her repertoire of hairstyles and hair colors.
The player can challenge her alongside Melli and Adaman through the Path of Tenacity option at the Training Grounds after the Daybreak update.
Pokémon
Path of Tenacity
These fights are made available in version 1.1.0 after clearing Request 106: "Adaman's Hope".
Arezu was introduced as a Supporter card in the Pokémon Trading Card Game during the English Sword & Shield Series (the Japanese Sword & Shield Era). It was first released in the Japanese Dark Phantasma subset and the English Lost Origin expansion, with artwork by kirisAki. It was also released as a Full Art card and Secret card in the same Japanese and English expansions, with artwork by You Iribi. It allows the player to search their deck for up to three Evolution Pokémon that do not have a Rule Box, reveal them, and put them into their hand, then shuffle their deck.
Trivia
The Pokémon that Arezu uses appear to be based off that of Mars, who also uses both Bronzor, Bronzong, and Purugly.