In the early 2000s, a Japanese internet subculture emerged, characterized by a peculiar style of expression. Two key terms associated with this phenomenon are "Gachinko Gachi 525" and "Gachiakume."

A stream‑er named (who goes by “KaitoGachi” on YouTube) managed to land three copies of Kuro‑Hime in a single 525‑pull session. His reaction clip— “Gachinco gachi 525 Gachiakume!!” —went viral, racking up 12 million views within a week.

: Rudo, a young boy from the slums who scavenges trash to survive, is framed for the murder of his foster father, Regto, and thrown into the Pit.