kunai can be used close range and long range

the only thing better about shurkin is that there faster and you can through them quicker. Although I dont really favor either of them if i was in short range combat i would use a shurkin and in long ranger i would a kunia

It depends on their size, they can range from big to small.

okay..... i guess the kunai i like more

Well, seeing as "stong" is not a word, I don't know which to pick. However, if you meant "strong", or perhaps even "stronger", as "more strong" is usually an atypical way of describing superior strength in the English language when such as word as "stronger" is available, then I would have to say the kunai, for as the shuriken has the advantage of four blades, as opposed to one, the kunai looks, from the image, like it would have a stronger impact on the target when thrown.

-_-

hahahaha you think too much

Kunai!!