Strong, Strength
You have a private bow made of insects that's extremely strong. Insect bodies are really durable, so they make for strong bows. You also have to be strong to use it, since it was made just for strong arms.
Imagine holding this strong bow in your strong arms. Look closer at the little insect bodies that make it up. Thanks for your help, little guys.
きょう, ごう
つよ
None
You had this strong bow made especially for you in きょうと. きょうと is famous for their strong bows, so if you ever want another, you know where to go.
Imagine all the strong people who live in きょうと and make strong things. You should go there someday!