There are several ways to earn Bloody branches on the game, like collecting
dead branch (item # 604)
and by collecting dead branches, your goal is to summon mini-boss like;
These mini-bosses drop bloody branches.
Another way of collecting bloody branch is to collect
This coin can be dropped on almost every monster in the game, and your goal is to collect them and exchange them with the NPC that we have (Prontera 170, 181), and he looks like this.
By selecting the NPC, there are several items for which you can exchange your poring coin. All you have to do is select the NPC.
click Poring Coin
As you can see in the picture, every Bloody Branch costs 200 poring coins, and again, like I said, collecting poring coins is easy because they are being dropped by almost every monster in the game.
Suggestion: If you are going to collect poring coins , try to collect other drops as well, like Yggdrasil Berry