K-PRO Representative Sejun Conducts Second Lecture at Katsushika Sogo High School on March 17th, Introducing Korean Culture and Practical Pronunciation Guidance

Accent Ace Inc. (Headquarters: Chuo-ku, Tokyo; Representative: Yun Sejun), which operates a Korean language education business and online school, held its second special lecture for pre-study trip preparation for Korean study tours at Tokyo Metropolitan Katsushika Sogo High School on Tuesday, March 17, 2026.

This lecture focused on the latest Korean trends and differences between Korean and Japanese cultures, providing practical pronunciation guidance for Korean phrases. It also integrated cultural understanding with language learning to help students communicate smoothly during their trip.


■Accent Ace's Commitment to Educational Activities

Accent Ace Inc. excels at providing practical learning that combines language education with cultural understanding, and is working to nurture the next generation of international talent through lectures at educational institutions. In this second lecture held at Katsushika Sogo High School, building upon the previous session, we focused on knowledge that is more practical and useful on-site.

■Background and Objectives of the Lecture

For students preparing for a study tour in Korea, cultural understanding is as essential as language proficiency to make their on-site experience more meaningful. This lecture was structured around the following themes:

* The background of idol culture popularity in Korea and its differences from Japan * Popular food culture in Korea and the reasons behind it * The background of the boom in Japanese culture and Japanese food in Korea * Pronunciation guidance for Korean phrases immediately usable on-site * Correct methods for acquiring Hangul pronunciation that Japanese speakers find difficult * Introduction to Korean expressions with pronunciation similar to Japanese * The close relationship between language and culture and its importance in learning

Through these topics, we aimed to cultivate students' ability to proactively communicate on-site.

  

■Practical Pronunciation Guidance and Experiential Learning

This lecture emphasized hands-on learning where students actively speak, rather than just inputting knowledge.

* Training to acquire pronunciation close to native speakers * Phrase practice usable on the spot * Content to understand changes in meaning due to "differences in pronunciation" * Experiencing the importance of pronunciation in communication

The guidance centered on pronunciation allowed students to experience the feeling of speaking "comprehensible Korean."

  

 

■Past Lectures and Class Achievements

* **Korean Culture Lecture at Chuo-ku Tsuitajima Elementary School** A quiz-style lecture on Korean culture, emphasizing background understanding beyond language, to spark students' interest in different cultures.

* **Multicultural Understanding and Study Abroad Career Lecture at Tokyo Metropolitan Afuka High School** A lecture based on personal experience as a government-sponsored international student, discussing values in a multicultural society and the significance of studying abroad. Individual advice was also provided to students aspiring to study in Korea.

**Profile of Korean Instructor Sejun**


Born in Seoul, Korea. Graduated from Kyoto University's Faculty of Integrated Human Studies (majoring in Neuroscience, Physiology, and Linguistics). Attended an international school in Korea through high school, then came to Japan as a MEXT scholar after graduating high school. After university, worked at Recruit Co., Ltd. before starting his own company. Fluent in Korean, Japanese, English, and Chinese. Achieved perfect scores on the Japanese Language Proficiency Test N1, TOEIC, and HSK Level 4. Representative Korean Culture Lecturer at the Korean Embassy's Saitama Education Center. Also works as a Korean coach for AVEX artists. Operates the YouTube channel "Sejun's Korean: Pronunciation is 90%" (33,600 subscribers), teaching beginners and those who have struggled with learning how to speak in a short period.

Instagram: https://www.instagram.com/seungjoonyun/ TikTok: https://www.tiktok.com/@seungjoonyun YouTube: https://www.youtube.com/channel/UCCxS_ExpILN5I817YKvwhQA

■Media Features and Appearances (Partial)

* **HuffPost** "Is the reason Korean doesn't improve 'starting with grammar'? A Kyoto University graduate and Korean instructor teaches 'sound training' study methods for beginners" "What are recommended programs for studying Korean? A popular instructor who graduated from Kyoto University talks about the pitfalls of 'apps' and how to choose certification exams" "Useful Korean phrases for fan activities and travel. What expressions should be careful of during fan meetings? We heard 'words that make your idol happy'"

* **Nikkan SPA!** "'Mobile phones prohibited, buzz cuts, tears from tear gas' The brutal reality of military service experienced by all Korean youth. Even BTS is no exception."

* **Chiba TV** KAN・KAN・KAN! ~Sejun's 5-Minute Easy Korean Drama~

■About K-PRO Online Korean Language School

K-PRO is an online school aiming for students to acquire "comprehensible Korean" in a short period through its unique learning method starting with pronunciation. Keywords: Korea, Korean language, Korean language learning