Season 1
Changing Majors
Episodes
1. Department of Police Administration, Dongguk University
November 11, 2022
2. Department of Thai at Hankuk University of Foreign Studies
November 18, 2022
3. Department of Broadcasting and Entertainment, Induk University
November 25, 2022
Guest Stars: Shin Hyun-joon
4. Department of Veterinary Medicine, Konkuk University
December 2, 2022
5. Department of Psychology, Catholic University
December 9, 2022
6. Department of Physical Therapy, Samyuk University
December 16, 2022
7. Department of Air Service, Bucheon University
December 23, 2022
8. Department of E-sports, Osan University
December 30, 2022
9. Department of Physical Education, YongIn University
January 6, 2023
10. Department of Practical Music and MT Part 1
January 13, 2023
11. Department of Practical Music and MT Part 2
January 20, 2023
12. Seoul National University's Broadcasting Club
February 16, 2023
Changsub is joined by Key (from SHINee) as he reviews Seoul National University's Broadcasting Club during winter vacation.
Guest Stars: Key
13. Korea University's Cheerleading Club
February 23, 2023
14. Dankook University's Stock Club
March 2, 2023
15. Chung Ang University's Theater Club
March 9, 2023
16. Department of Business Administration, Yonsei University
March 23, 2023
It's the start of the first semester and Jeongwaja returns to change majors again! Lee Changsub goes to the Department of Business Administration, the largest number of departments in Korea. From marketing classes, which are the foundation of business administration, to how to be flattered at work?
17. Department of Mechanical Engineering, Busan University
March 30, 2023
To go to the same school as Yim Siwan, Jeongwaja commutes for 10 hours! Lee Changsub learns Mechanical Engineering with a special lecture on real Busan dialect from the local and fundamentals of machine that is easily(?) learned with Legos and robots.
18. Department of Physics, Kyung Hee University
April 6, 2023
Lee Changsub takes physics class, which is known to be a class that only real fans of science take! Starting with Interstellar's quantum mechanics and even an experiment that can win the Nobel Prize(?), Ant-Man, Doctor Strange...is it possible in real life?
19. Department of Beauty Art, Seokyeong Unviersity
April 13, 2023
From shampooing to drying and cutting, Lee Changsub goes to the Division of Beauty Art and experiences a full course at a hair salon by majoring in Hair Design!
20. Department of Architecture, Soongsil University
April 24, 2023
Lee Changsub takes a class in the Department of Architecture that says staying up all night is basic! Taking a class at a construction site blowing cement powder and a design class where the professor buys chicken, Jeongwaja finally finds his talent?
21. Department of Media Communication, Sungkyunkwan University
April 27, 2023
From storytelling to nonverbal communication method, Lee Changsub learns everything by visiting Media Communication, a popular liberal arts department! With a surprise appearance of colleagues at work, Jeongwaja goes back to his main job?
Guest Stars: Seo Eun-kwang, Lee Min-hyuk, Lim Hyun-sik
22. Department of Companion Animal Health, Yeonsung University
May 4, 2023
Lee Changsub goes to the Department of Companion Animal Health where he took classes with Shiba (not swearing)! From making pet food that even people covet to pet training tips that surpass Kang Hyung-wook, how will Jeongwaja (aka Guri's daddy)'s adaptation period to the Department of Companion Animal Health be?
23. Department of Nursing, Ajou University
May 11, 2023
From the mystery of the birth of life to urgent real emergency room case practice, Lee Changsub learns in Ajou University's Department of Nursing! How does one respond to an emergency room patient? Jeongwaja shows us how!
24. Department of Fashion Design, Hansung University
May 25, 2023
Jeongwaja goes to Hansung University's Department of Fashion Design to become a fashion leader of the new generation! Lee Changsub tries to make clothes himself and even does the fitting! Let's check his fashion sense!
25. Department of Hotel Culinary Arts, Korea Hotel & Tourism Technical College
June 1, 2023
Lee Changsub goes to the Department of Hotel Culinary Arts and tastes heavenly food! A Jeongwaja who receives a special secret from Professor Lee Yeon-bok and Professor Jung Ho-young is reborn as a Cooking Master Boy, in one day?
26. Military Academy #3
June 8, 2023
"Jeongwaja has been ordered to be re-enlisted..!🪖” Jeongwaja ended up re-enlisting in the army to carry out the promise he made for reaching the 🔥500k subscribers🔥 milestone
27. Hanyang University Division of Materials Science and Engineering
June 15, 2023
28. Department of Urban Administration, University of Seoul
June 22, 2023
29. Division of Navigation Science, Korea Maritime and Ocean University
June 29, 2023
30. Department of Early Childhood Education, Kyungin Women's University
July 6, 2023
31. University Work Program for Rural Areas, Kookmin University
July 13, 2023
32. The reason they give up math? (feat. People who give up math) [Sogang University Math Department]
September 21, 2023
33. South Korea's Top Fine Arts College [Hongik University Department of Painting]
September 25, 2023
34. A degree worth a shot [Kyunghee University Korean Medicine Department]
September 28, 2023
35. Never lose an argument again [Philosophy, Korea University]
October 5, 2023
36. Major packed with horses [Univ of Agriculture&Fisheries Horse Industry Major]
October 19, 2023
37. A Must-Visit Course Before the Air Force [Hanseo University Helicopter Operations]
October 26, 2023
38. Re-enrollment, Let's go to Howon University Department of Practical Music
November 2, 2023
39. Top level universities worldwide (feat.1million subscriber pledge) [Overseas Univ]
November 9, 2023
40. Korean Studies without Koreans [The University of Hong Kong, Korean Studies]
November 16, 2023
41. Finally, Jeongwaja in court [Kookmin College of Law]
November 23, 2023
42. Reservation Tips from future hoteliers [Sejong Univ. Hotel and Tourism Management]
November 30, 2023
43. Ways to put out the fire from firefighter [Fire and Safe Management at Kyungmin Univ]
December 7, 2023
44. The Top-tier level in Engineering, KAIST [KAIST Aerospace Engineering]
December 14, 2023
45. Professor Shares A Hangover Remedy [Inha University Department of Biotechnology]
December 28, 2023
46. Hanyang University ERICA Department of Dance and Arts
January 4, 2024
47. Professor, do you really not notice people ducking out?
January 11, 2024
48. MZ Orientations (OT) nowadays;; [Ajou University Department of Pharmacy]
March 28, 2024
49. Broke the Microphone at the Vocal Department [Hanyang University Vocal Music Dept]
April 4, 2024
50. What color do you like? [Chung-Ang University Department of Political Science]
April 11, 2024
51. I'm an Ewha University Boy [Ewha Womans University Department of Ceramic Arts]
April 18, 2024
52. Department for nuclear-level geniuses only [SNU Department of Nuclear Engineering]
April 25, 2024
53. Jeongwaja goes to a prestigious university in Japan [Osaka University]
May 2, 2024
54. Working part-time in Japan and setting people up together [Part-time/USJ]
May 9, 2024
55. Department that eats airline food for lunch [KAU Department of Drones]
May 16, 2024
56. Teacher, how are babies made? [Seoul Nat'l University of Education]
May 23, 2024
57. Department where they become Webtoon writer [Yonsung Univ. Webtoon Contents Dept.]
May 30, 2024
58. Mom VS Girlfriend drowning in water, what's your choice? [PKNU Marine Sports Dept]
June 6, 2024
Pukyung National University Marine Sports Department
59. How to choose the toothpaste according to the Department of DH [Gachon Univ. DH Dept]
June 13, 2024
Gachon University Dental Hygiene Department
60. #1 University that Jeongwaja should avoid [Police University]
June 20, 2024
61. The military train will be departing[Woosong Univ. Dept of Railway Vehicle System]
June 27, 2024
Woosong University’s Railway Logistics College
62. Finally Re-re-enlisting in the Military [Air Force Academy]
July 4, 2024
63. It's Not Over Until It's Over [Incheon Nat'l University Summer Semester]
July 11, 2024
64. Which Department Reigns Supreme in Korea? [Union MT Part 1]
August 22, 2024
65. Which University is the Best in Korea? [Union MT Part 2]
August 29, 2024
66. Jeongwaja Acting? Surprised, Right? [Kyung Hee University Theater and Film Department]
September 26, 2024
67. The department where "Shi-X" means "sorry" [HUFS Arabic Department]
October 3, 2024
68. Bread Unnie, Kim Yeon-koung, is a freshman here at [KNOU Department of Sports for All]
October 10, 2024
69. Most Heartbreaking Fairy Tale [Danguk University Creative Writing Department]
October 17, 2024
70. POSTECH vs KAIST Showdown Stories [POSTECH Computer Science Department]
October 24, 2024
71. Legendary ER Stories Unveiled [Eulji University Paramedic Department]
November 7, 2024
72. The Day Before the CSAT [SeoulTech Visual Communication Design Department]
November 14, 2024
73. Get service at a mala tang restaurant [Myongji Chinese Language and Literature]
November 21, 2024
74. Perfect shot tips from Modeling Dept. [Seokyeong Univ's Modeling & Acting Major]
November 28, 2024
75. How Much Do Music Students' Instruments Cost? [Chugye University for the Arts]
December 5, 2024
76. The Truth About Jeju Uni's Tangerine Packaging Department [Tourism Management]
December 12, 2024
77. Why take medicine 30 minutes after a meal? [AJOU UNIVERSITY College of Pharmacy]
December 19, 2024
78. Came to build a ship [MNU Naval Architecture And Ocean Engineering]
December 26, 2024
79. How to get 1 million won a year [Chung-Ang University Social Welfare Department]
January 5, 2025
80. Dentist Tips from a Dental Student [SNU Graduate School of Dentistry]
January 8, 2025
81. Episode 81
82. Episode 82
83. Episode 83
Season Reviews
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