Almi in Yo-kai Watch 1

Perusing a book in the lower left corner of Settle In Bookstore in Springdale Flower Road in Shopper's Row will unlock the ability to make offerings at Mount Wildwood Shrine once a day. After making an offering for 20 days, Almi will appear to fight the player and will then befriend them.

After this process is finished, Almi can rarely appear in the river in Breezy Hills. Although there may be a low chance that Almi can always be found here.