https://www.youtube.com/watch?v=FOoyyjcolV0

You don't need a tagane hammer, just get a carbide drill bit like this:

https://smile.amazon.com/gp/product/B0000224YW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Use a 60 grit belt to flatten out the end and round the edges and use it like a chisel with a hammer and gentle taps to straighten the steel. You will have to refinish the part of the blade where you hammered it.