Here are the nodvd cracks for sakura taisen 1 to 4 Premium edition (downloadable from thepiratebay).

I DID NOT MAKE THEM. Im just sharing because i think they are a little hard to find.

To use them just copy all the files from the folder into the respective game, then install the patches. 

They work and they are virus free. 

To play the games print or read from your ipad or whatever, one of the translation guides from gamefaqs. I beat the first and 3rd game by doing that.

Enjoy Sakura Taisen!!!