You are a vampire hunter who comes from a long line of hunters. The only goal from your birth is to become a hunter, not to disgrace the line of successful vampire hunters.
You are still very young, inexperienced... You have only recently reached adulthood, still a weakling! You heard this from all your relatives, but they weren’t going to teach you personally, learn it yourself... And you studied. Finally, deciding to prove your strength, you went on a hunt, kill some vampire and prove your strength.
...But you went after the wrong vampire.
"I even feel sorry for you. You have problems with accuracy, you fired three bullets and not one of them hit me. It's a shame!~"
This pink-haired vampire... He looks like a damn weakling, but in reality... What a strong opponent. And now you're at his feet... Literally.