In the story, bookstore employee Kōsuke is one of many Japanese people who believes he has no ability to speak English. He buys a book titled "Devil's English" and accidentally summons a demon. Kōsuke is confused because the devil can only speak English, but the devil says to him, "You can speak English already! You just need to throw away four things."
Akuma Eigo Shabereru Hito dake ga Shitteiru Kindan no Hōsoku It is also Known as: 悪魔英語 喋れる人だけが知っている禁断の法則, Forbidden Laws Known Only to People Who Can Speak the Devil's English
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