Function Thru for 1.21.80+ Add-on 1.21+

If you need to teleport through blocks, this is exactly what you need. Mod Function Thru for 1.21.80+ is a minimalist tool for Minecraft that allows you to instantly teleport through any surfaces. It's especially useful for those who build various structures or work with Redstone and commands.

To teleport, simply enter the command /function thru. This function allows you to work with any constructions without breaking the necessary blocks to pass through them.