Gacchan

A Korean creator known as 'Gacchan' who teaches English to Japanese audiences through YouTube videos, short-form content, and a bestselling book. The content focuses on fundamental English grammar, pronunciation, vocabulary, and test preparation for exams like TOEIC, often using clear explanations and comparisons with Japanese and Korean. The creator promotes their book 'Gacchan English' and shares updates on its sales milestones, while occasionally discussing cultural topics like the World Cup and language difficulty comparisons.