When playing the game with a pen display tablet connected to your PC, you may experience the following issues:

• The knife stays stuck to the cursor and won’t release.
  
• Items do not respond or behave strangely when tapped (touched with the pen).

Disabling Windows Ink in the tablet’s dedicated settings application may resolve this issue.

Tested Device: Windows 11 PC, Huion Kamvas Pro 16 (Pen Display Tablet)

Steps:
1.Open the "Huion Tablet" (tablet settings application).
2.Select the [Digital Pen] tab and uncheck [Enable Windows Ink].
3.Launch Shawaruma Legend and check if the issue is resolved.

This solution may work for other tablet brands and models as well.
For reference, here are the official instructions on how to configure Windows Ink for popular PC-connected tablet brands in Japan:

Wacom | Using Pen with Windows Ink [101.wacom.com]
XPpen | Download (Windows Ink settings can be found in the user manuals) [www.xp-pen.com]

Many other tablet brands also provide similar settings in their dedicated applications. Please refer to your device’s manual for more details.

If you have encountered similar issues with other pen tablets, please share your device name and solution in the comments! Your input may help others facing the same problem.

I am not a native English speaker, so some parts of this guide may sound unnatural. Thank you for reading to the end!