If you follow many Tanuki to their end point, you'll trigger this achievement. I'm sorry I did not keep the count as I was not aware of this achievement. It is a
Here's my mallet - Paul Sellers' Blog
Yamada Go's Wooden Mallet | Genshin Impact Wiki | Fandom
Genshin Impact Guide: Locations of All Tanuki in Inazuma - Player Assist | Game Guides & Walkthroughs
Yamada Go's Wooden Mallet - Achievement - Genshin DB
Version 2.0] "All 15 Tanuki Locations" Hidden Achievement: Yamada Go's Wooden Mallet Genshin Impact | HoYoLAB
Yamada Go's Wooden Mallet | Genshin Impact Wiki | Fandom
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Genshin Impact 2.0: All Secret/ Hidden Achievements in Inazuma – GAMERPILLAR