Katanal

Katana.
Anal.
Katanal.

Samurais are fairly particular about their weapons.

Finicky.
Kyujutsu.
Finickyujutsu.

(Now you try one. How about "Anxious" plus "Shuriken"?
Anxiouriken? Not as easy as it looks.) *


* Or perhaps it is exactly as easy as it looks.
Depending on who's doing the looking and easing.

Watch.
Wakizashi.
Watchizashi.