How To Increase Pokemon Friendship Level In Pokemon Legends: Z-A

"These include different kinds of berries that boost friendship, while also lowering a particular stat. We don't really recommend using these since it's hard to offset the penalties to a Pokemon's stat growth. But if you really want to, you can check unmarked vendor and market stalls all over the city: Pomeg Berry - Lose base points for its HP stat. Kelpsy Berry - Lose base points for its attack stat. Qualot Berry - Lose base points for its defense stat."

"Still, one item that's quite viable is the Soothe Bell. It's a reward from Side Mission 36: Some Friendly Competition. Here are a few tidbits: The quest giver NPC is right in front of Cafe Rouleau in Magenta Sector 5. It's in the western part of the map. Defeat the trainer's Clefairy to receive the item. You can have a Pokemon hold the Soothe Bell via the inventory screen. This makes the creature friendlier."

Several items increase Pokémon happiness and friendship in Pokemon Legends: Z-A. Different berries boost friendship but lower a specific base stat: Pomeg (HP), Kelpsy (attack), Qualot (defense), Hondew (SP attack), Grepa (SP defense), Tamato (speed). These berries are available at unmarked vendor and market stalls throughout the city. Using these berries is not recommended because the stat base point losses are difficult to offset for long-term growth. The Soothe Bell raises friendship without stat penalties. The Soothe Bell is a reward for Side Mission 36: Some Friendly Competition, obtained by defeating a trainer's Clefairy near Cafe Rouleau in Magenta Sector 5. A Pokémon can hold the Soothe Bell via the inventory screen to increase friendliness.

Read at GameSpot