日本伝統刺青 彫天 » 彫天
透かし 彫り 刺青 ★鳳凰桜吹雪（胸割り）スジ！ 処NATS千葉旭 彫あきTATTOO Blog
Web it is said that when light is held up, the hole becomes bright and transparent, and the light that leaks out of it is likened to the light of a firefly, hence the name hotarute.