What does the 「をな」mean in this sentence?


It is said by a boy who intend to train boxing by himself.

> あしたのために-その3" のひみつ練習 **をな** ！

I think that the 「な」 would be

1) Verb 為す but I don't have any idea why it does not include the part to
indicate some forms of verb like な **せ** (imperative form) or な **そう**
(volitional form)

2) emphasis sentence-ending particle 「な」




It's two particles; を happens to be followed by な.

  * を is a plain object marker, but apparently it marks an object in the _previous_ sentence. Is there a transitive verb without a corresponding object in the previous sentence, for example やるぜ, 頑張るよ, 教えてくれ, etc? The word order is reversed and the sentence is split into two for emphasis. Saying the verb first is a common rhetoric device in Japanese (known as 転置法/hyperbaton). Typical example is: 

> 変えよう、世界を！ Change the world!

  * な is a sentence-end particle for mild emphasis. It's like "you know" or "yeah" but you can ignore it in translation. The verb なす is irrelevant.

* * *

**EDIT** : Now that OP posted the previous context, I can say ひみつ練習を is the
direct object of やった after ひとり. "It's far more worthwhile to do it alone. (I
mean,) Doing the practice of あしたのために・その3!"




It's two particles; を happens to be followed by な.

  * を is a plain object marker, but apparently it marks an object in the _previous_ sentence. Is there a transitive verb without a corresponding object in the previous sentence, for example やるぜ, 頑張るよ, 教えてくれ, etc? The word order is reversed and the sentence is split into two for emphasis. Saying the verb first is a common rhetoric device in Japanese (known as 転置法/hyperbaton). Typical example is: 

> 変えよう、世界を！ Change the world!

  * な is a sentence-end particle for mild emphasis. It's like "you know" or "yeah" but you can ignore it in translation. The verb なす is irrelevant.

* * *

**EDIT** : Now that OP posted the previous context, I can say ひみつ練習を is the
direct object of やった after ひとり. "It's far more worthwhile to do it alone. (I
mean,) Doing the practice of あしたのために・その3!"

