Test
A horse and a squid are going to test you.
Imagine the horse and squid in a big testing room, getting ready to test you. What are they testing you on? Weirdly, they're going to test you on all the kanji that use horse and squid radicals. You ready?
けん
ため, ためし
None
The test is being supervised by Ken (けん) the samurai.
To make sure you don't cheat on the horse and the squid test, Ken the samurai is watching you closely, pacing up and down. Every now and then, he waves his katana menacingly.