Ninja cant see Shinigami, therefore, they auto loose, anyone who says otherwise is retarded
I hate this argument. It have been around forever but people always ignore the new feats to prove this wrong.
Naruto characters can see spirits.
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Here we have Choza looking at Dan in his Spirit form.
Later in that same chapter we get Tsunade and Dan talking. Clearly both pages show Naruto characters able to see Dan in his spirit from.
How about that soul dragon Nagato uses?
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If that isn't good enough we have this here.
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Naruto can see his own soul being ripped out of him AND able to physically grab it.
How can you argue that Naruto characters cant see spirits.
One Piece characters can also.
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There you got Luffy clearly trying to capture some ghosts. He wouldn't even know they are there if he couldn't see him.
Even as early back as Skypiea, Usopp saw a spirit too.
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We later find out what it is when Franky tells the story in the Water 7 Arc.
Of course they can also hit them.
This is actually proven using Bleach.
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As early as chapter 9, we have Chad, who is a human, able to hit a hollow. Rukia even confirms that they can hit hollows and Shinigami.
Even physical objects can as well.
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Both Naruto and One Piece can see Spirits/Ghosts/Shinigami. Just because they are named something different in the other manga doesn't mean they are different. The concept is still the same. They are all spirits.
Even if that isn't a good enough answer for you, the OP clearly stats that for the sake of argument, they can see each other. Clearly you didn't read the opening post or you did, but still are trying to cause problems. Either way, you are a troll and are not to be taken seriously.
Prove me wrong.