Recomend zoldyck or hanma bloodline There not super op but there not weak either and there perfect for the workd hes in right now for skils i would have no clue where to start
pickle bloodline don't do some op bloodline at the start you will ruin the story. pickle bloodline is very good in martial arts world of even. saipan or the likes would ruin the story
If not those you dont see that many demigod/angel/yokai bloodlines in fanfics most choose stuff to do with demons which feels a little overused at this point either way i dont really care its ur story author just my suggestions also thank you for writing this and i look forward to the storys future