じゃんけん

extremely useful

this is immensely useful. the next time i'm ever mugged in a japanese alleyway i'll be able to bust out my fist and shout "jankensho!!"

if they lose they're legally obligated to let me go

Short & Fun

It's a very short and fun story best for absolute beginners. The terms for "Rock-Paper-Scissors" which are unique to the game in Japanese (along with the phrase あいこでしょう!) might be new for beginners but they can be understood from context and the last page of the book illustrates them well. It's a nice read overall (⁠◍⁠•⁠ᴗ⁠•⁠◍⁠)

great

ahh yess finally something I can read hahah

Little bit pointless

This was super easy to read, but I don't think learning Rock Scissor Paper in Japanese is helpful to me.