An eccentric song about a foreigner rescuing in Japan. He rescues a geisha from ninjas, who takes him to "Club Ryugu Castle" to repay for his kindness. She is then kidnapped and trapped in a door, and the foreigner, unable to read kanji, chooses 闇 (darkness) instead of 開 (open) out of a panel of buttons with relatively similar kanji, and the PV ends with the hero falling into darkness as the floor disappears under him.