혈계전선 1기 OP Hello,world! 노래 | BUMP OF CHICKEN 가사출처 | https://namu.wiki/w/%ED%98%88%EA%B3%84%EC%A0%84%EC%84%A0/%EC%95%A0%EB%8B%88%EB%A9%94%EC%9D%B4%EC%85%98#s-1.3 BUMP OF CHICKENHELLOHELLO WORLDWorld血界戦線월드헬로헬로월드혈계전선혈계전선 1기 op혈계전선 1기 op hello world혈계전선 op WACOCA: People, Life, Style.
WACOCA: People, Life, Style.