Hi Gerani,
I would like to tell you that masturbating to mana is a paraphilia, which is an abnormal attraction...pedophiles are in this category. This is why most people find your idea to be disturbing.
So, in turn, this would mean that the person masturbating to mana would have a sexual dysfunction.
And yes, any bible reader will probably know what mana is.
In the eyes of the "world," I would have to say that masturbation is not wrong. Although, masturbation is "normal" and changes from person to person and religion to religion if it is right or wrong. If our Father lies on your heart that it is wrong, well then, it is wrong for you.
Pray about it and listen to what He tells you.
Note: Be careful not to lust, however, for the King of all kings said it was wrong, therefore it is wrong for His followers. So, try not to lust purposely for things just to be able to masturbate. (example: fantasy, pictures)
Also: I will never understand fully of a males feeling towards sex, so, I feel I am not at liberty to say you can or cannot.
Hope this helps.