Changing Majors () is a South Korean variety web series featuring various universities, colleges and schools, and the courses offered inside. Produced by Kakao Entertainment's subsidiary ootb (Out of the Box) Studio, each episode of the series would be released at 18:00 (KST) on Thursdays through the company's YouTube channel.
ENA aired selected past episodes of the series that were re-processed for television, every Friday beginning May 23, 2025, for 10 weeks.
The series starred Lee Chang-sub of BtoB for the first five seasons, and Kai of Exo beginning season 6.
Cast Lee Chang-sub (BtoB) (Seasons 1–5) Kai (Exo) (Season 6–present)
Episodes Season 1
Upload Date Featured University/School Featured Department Remarks 0 November 9, 2022 colspan="2" Behind of Episode 1 1 November 11, 2022 Dongguk University Police Administration 2 November 18, 2022 Hankuk University of Foreign Studies Thai Language 3 November 25, 2022 Induk University Broadcast & Entertainment Appearance by Shin Hyun-joon, who is a teaching professor in the university 4 December 1, 2022 Konkuk University Veterinary Medicine 5 December 8, 2022 Catholic University of Korea Psychology 6 December 15, 2022 Sahmyook University Physical Therapy 7 December 22, 2022 Bucheon University Airline Services 8 January 5, 2023 Osan University e-Sports Appearance by Byeon Sung-chul, who is a teaching professor in the university 9 January 12, 2023 Yong In University Physical Education Appearance by Jang Mi-ran, who is a teaching professor in the university 10 January 19, 2023 Howon University rowspan="2" Practical Music MT 11 January 26, 2023 12 February 16, 2023 Seoul National University Broadcasting Club Winter Vacation Special Spin-offSpecial Guest: Key (Shinee) 13 February 23, 2023 Korea University Cheerleaders Squad Winter Vacation Special Spin-off 14 March 2, 2023 Dankook University Stock Trading Club 15 March 9, 2023 Chung-Ang University Theater Club
Season 2
Upload Date Featured University/School Featured Department Remarks 16 March 23, 2023 Yonsei University Business Administration 17 March 30, 2023 Pusan National University Mechanical Engineering 18 April 6, 2023 Kyung Hee University Physics Appearance by Kim Sang-wook, who is the head of the university's Department of Physics 19 April 13, 2023 Seokyeong University Hair Design 20 April 24, 2023 Soongsil University Architecture Delayed release from the supposed release date of April 20, 2023 in light of the death of Moonbin 21 April 27, 2023 Sungkyunkwan University Media Communication Surprise appearances by the remaining BtoB members 22 May 4, 2023 Yeonsung University Companion Animal Health 23 May 11, 2023 Ajou University Nursing 24 May 25, 2023 Hansung University Fashion Design 25 June 1, 2023 Korea Hotel & Tourism Technical College Hotel Culinary Arts Appearances by Lee Yeon-bok and Jung Ho-young, who are teaching professors in the college 26 June 8, 2023 Korea Army Academy at Yeongcheon Commemoration of 500,000 Subscribers 27 June 15, 2023 Hanyang University Material Science and Engineering 28 June 22, 2023 University of Seoul Urban Administration 29 June 29, 2023 Korea Maritime and Ocean University Navigation Science 30 July 6, 2023 Kyungin Women's University Early Childhood Education 31 July 13, 2023 Kookmin University University Volunteer Work Program in Rural Areas
Season 3
Upload Date Featured University/School Featured Department Remarks 32 September 21, 2023 Sogang University Mathematics 33 September 25, 2023 Hongik University Fine Arts 34 September 28, 2023 Kyung Hee University Korean Medicine 35 October 5, 2023 Korea University Philosophy 36 October 19, 2023 Korea National University of Agriculture and Fisheries Horse Industry 37 October 26, 2023 Hanseo University Helicopter Operations 38 November 2, 2023 Howon University Practical Music Appearances by Kim Jae-seok and Shin Yon-a (Big Mama), who are teaching professors in the university 39 November 9, 2023 University of Hong Kong Commemoration of 1,000,000 Subscribers 40 November 16, 2023 Korean Studies 41 November 23, 2023 Kookmin University Law 42 November 30, 2023 Sejong University Hotel and Tourism Management 43 December 7, 2023 Kyungmin University Fire and Safety Management 44 December 14, 2023 KAIST Aerospace Engineering 45 December 28, 2023 Inha University Biotechnology 46 January 4, 2024 Hanyang University Education Research Industry Cluster at Ansan Dance 47 January 11, 2024 colspan="2" Finals ExamProfessors' Q&APop-up Store Mission
Season 4
Upload Date Featured University/School Featured Department Remarks 48 March 28, 2024 Ajou University Department of Pharmacy Orientation Program 49 April 4, 2024 Hanyang University Vocal Music Appearance by Ko Seong-hyeon, who is a teaching professor in the university 50 April 11, 2024 Chung-Ang University Political Science 51 April 18, 2024 Ewha Womans University Ceramic Arts 52 April 25, 2024 Seoul National University Nuclear Engineering 53 May 2, 2024 Osaka University Applied Science and Engineering 54 May 9, 2024 colspan="2" Part-time WorkExperience in Universal Studios Japan 55 May 16, 2024 Korea Aerospace University Drone Engineering 56 May 23, 2024 Seoul National University of Education Elementary Education 57 May 30, 2024 Yeonsung University Webtoon Contents 58 June 6, 2024 Pukyong National University Marine Sports 59 June 13, 2024 Gachon University, Medical Campus Dental Hygiene 60 June 20, 2024 Korean National Police University 61 June 27, 2024 Woosong University Railroad Studies 62 July 4, 2024 Korea Air Force Academy rowspan="4" Commemoration of 1,500,000 Subscribers 63 July 11, 2024 Incheon National University Seasonal Semester 64 August 22, 2024 rowspan="2" 2024 Changing Majors Union MT Special 65 August 29, 2024
Season 5
Upload Date Featured University/School Featured Department Remarks 66 September 26, 2024 Kyung Hee University Theater and Film 67 October 3, 2024 Hankuk University of Foreign Studies Arabic Language 68 October 10, 2024 Korea National Open University Sports for All Appearances by Ryu Seung-min, and Kim Yeon-koung who is currently an enrolled student in the university 69 October 17, 2024 Dankook University Creative Writing 70 October 24, 2024 Pohang University of Science and Technology Computer Science 71 November 7, 2024 Eulji University Paramedic 72 November 14, 2024 Seoul National University of Science and Technology Visual Design 73 November 21, 2024 Myongji University Chinese Language and Literature 74 November 28, 2024 Seokyeong University Modeling & Acting 75 December 5, 2024 Chugye University for the Arts Orchestral 76 December 12, 2024 Jeju National University Tourism Management 77 December 19, 2024 Ajou University Pharmacy 78 December 26, 2024 Mokpo National University Naval Architecture and Ocean Engineering 79 January 5, 2025 Chung-Ang University Social Welfare Delayed release from the supposed release date of January 2, 2025 in light of the Jeju Air Flight 2216 accident 80 January 8, 2025 Seoul National University Graduate School of Dentistry Dentistry Lee Chang-sub's final episode before his graduation from the show
Season 6
Upload Date Featured University/School Featured Department Remarks 81 March 27, 2025 KAIST Chemistry First episode with Kai as the main host 82 April 3, 2025 Yong In University Martial Arts 83 April 10, 2025 Sogang University English Language and Literature 84 April 17, 2025 Konkuk University ROTC Special appearance by Kim Dong-jun 85 April 24, 2025 Jeju National University Aquatic Life Medicine 86 May 1, 2025 Sangmyung University Food & Nutrition 87 May 8, 2025 Hongik University Student Council Special appearance by Kang Hyeun-seok 88 May 22, 2025 Korea Broadcasting Art School Voice Acting Special appearances by Kang Soo-jin and Jang Gyeong-hee 89 May 29, 2025 Hanyang University College of Education Korean Language Education, Art Education 90 June 5, 2025 Korea Tourism College Hotel Baking & Pastry 91 June 12, 2025 Yonsei University Electrical and Electronic Engineering 92 June 19, 2025 Korea University Korean Literature 93 June 26, 2025 Woosong University Liberal Studies 94 July 3, 2025 Kookmin University Ballet 95 July 24, 2025 Seoul National University Insect Club Summer Vacation Special 1Special Guest: Ten (NCT, WayV) 96 July 31, 2025 Seongbuk Senior Welfare Center Summer Vacation Special 2Special Guest: Ralral 97 August 28, 2025 Seokyeong University Military Science Summer Vacation Special 3Special Guest: Jang Won-young (Ive)
Season 7
Upload Date Featured University/School Featured Department Remarks September 18, 2025 colspan="2" Course Registration Special 98 September 25, 2025 Inha Technical College Airline Service Management Special Host: Suho (Exo)Kai is absent due to clash of schedules 99 October 2, 2025 Sungkyunkwan University Classical Chinese 100 October 16, 2025 Dongguk University Correctional Science Special Guest: Lee Chang-sub (BtoB) 101 October 23, 2025 colspan="2" Jeongwadate Season 1 Episode 1Special Host: Lee Chang-sub (BtoB) 102 October 30, 2025 University of Seoul Sculpture Science Special Guest: D.O. (Exo) 103 November 6, 2025 Kyungbok University Clinical Laboratory Science 104 November 13, 2025 Kyonggi University Japanese Language and Literature 105 November 20, 2025 Korea Hotel & Tourism Technical College Hotel Food & Beverage Management Special Guest: Chaeryeong (Itzy) 106 November 27, 2025 colspan="2" Jeongwadate Season 1 Episode 2Special Host: Lee Chang-sub (BtoB) 107 December 4, 2025 Chung-Ang University Advertising and Public Relations 108 December 11, 2025 Daegu Gyeongbuk Institute of Science and Technology Brain Science Special Guest: Kim Jae-hyeok (Orbit) 109 December 18, 2025 colspan="2" rowspan="6" Jeongwadate Season 1 Episode 3Special Host: Lee Chang-sub (BtoB) 110 January 8, 2026 Jeongwadate Season 1 Episode 4 - International StudentsSpecial Hosts: Lee Chang-sub (BtoB), ChuuKai is absent due to clash of schedules 111 January 22, 2026 Jeongwadate Season 1 Episode 5Special Host: Sehun (Exo) 112 February 5, 2026 Jeongwadate Season 1 Episode 6Special Host: Lee Chang-sub (BtoB) 113 February 19, 2026 Jeongwadate Season 1 Episode 7Special Host: Lee Chang-sub (BtoB) 114 March 5, 2026 Jeongwadate Season 1 Episode 8 - Second ChanceSpecial Host: Lee Chang-sub (BtoB)
Season 8