HP wash for dual blade?

What do you mean with which blade i use? If i go STR i'll get more HP? how much HP if i use a STR blade? or does all the blades req str? :o sorry im just wonderin cuz im about to use 4b on db stuff >_<

1. Blades require DEX, not STR. Making a STR dualer would be somewhat difficult.
2. There are no STR blades.
3. STR doesn't add HP.
4. Different blades of different levels add different amount of HP. I can post an example if you want.