Question about P's puzzle pieces

[Rukitchi]

Like what even do they do? Are they like jewellery in Tamagotchi Friends or do they actually do something?

 

[wesley_13j]

https://www.tamatalk.com/IB/topic/187240-unlocking-locations-and-things-with-tama-p/

And Icon backgrounds at certain amounts acquired.

 

[NicoleCastilloL]

Puzzle pieces are required to obtaining the characters tama-tomo. You can see them in the notebook icon in the first option.

The amount of tama tomos you have unlocks locations. pLus, they are like the "mission" of the game. I challenged myself to get them all