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
Yamada Go's Wooden Mallet - Achievement - Genshin DB
Here's my mallet - Paul Sellers' Blog
Schaaf Wood Carving Tools 15oz Small Wooden Mallet | Wood Tools Woodworking | Wood Hammer | Comfortable Handle Reduces Hand Fatigue | Urethane Reducer Noise, Absorbs Force to Protect Woodworking Tools - Amazon.com
Schaaf Wood Carving Tools 15oz Small Wooden Mallet | Wood Tools Woodworking | Wood Hammer | Comfortable Handle Reduces Hand Fatigue | Urethane Reducer Noise, Absorbs Force to Protect Woodworking Tools - Amazon.com
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
Yamada Go's Wooden Mallet | Genshin Impact Wiki | Fandom
PSA: There is an achievement for catching Tanukis : r/Genshin_Impact