There is a shortcut for it (like everything else in this game hehe)
Do f,n,d,df,F+C~C and youll get dp into rekka ^^
Here is a nice HD aswell, not too hard and good damage/works fullscreen
st.C, df.D, B+C, st.D x qcf.C [HDC dp.C HDC qcf.C] x2, HDC dp.C HDC qcf.D~D, qcf.C, dp.C HDC qcf qcf.BD
EDIT: wow i need to update this page more often hehe. You have to go all the way to forward when you do the dp, and then hold F to get the rekka IIRC