confused with station name

Hi,
It's hard to say what is right without knowing where you are going. Hyperdia is used for rail, subways, etc. You will find a lot of trouble trying to find bus stops with it. The bus you'll want to use is the JR Tohoku bus which you can use your JR Pass with. There are schedules to get to Towadako from Hachinohe, since that route includes the Oirase stream walk. But I can't find anything regarding schedules from Shichinohe. There is more info here and here

Good luck.