1 - Department of Police Administration, Dongguk University

2 - Department of Thai at Hankuk University of Foreign Studies

3 - Department of Broadcasting and Entertainment, Induk University

4 - Department of Veterinary Medicine, Konkuk University

5 - Department of Psychology, Catholic University

6 - Department of Physical Therapy, Samyuk University

7 - Department of Air Service, Bucheon University

8 - Department of E-sports, Osan University

9 - Department of Physical Education, YongIn University

10 - Department of Practical Music and MT Part 1

11 - Department of Practical Music and MT Part 2

12 - Seoul National University's Broadcasting Club

Changsub is joined by Key (from SHINee) as he reviews Seoul National University's Broadcasting Club during winter vacation.

13 - Korea University's Cheerleading Club

14 - Dankook University's Stock Club

15 - Chung Ang University's Theater Club

16 - Department of Business Administration, Yonsei University

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

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

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

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

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

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?

22 - Department of Companion Animal Health, Yeonsung University

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

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

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

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

"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

28 - Department of Urban Administration, University of Seoul

29 - Division of Navigation Science, Korea Maritime and Ocean University

30 - Department of Early Childhood Education, Kyungin Women's University

31 - University Work Program for Rural Areas, Kookmin University

32 - The reason they give up math? (feat. People who give up math) [Sogang University Math Department]

33 - South Korea's Top Fine Arts College [Hongik University Department of Painting]

34 - A degree worth a shot [Kyunghee University Korean Medicine Department]

35 - Never lose an argument again [Philosophy, Korea University]

36 - Major packed with horses [Univ of Agriculture&Fisheries Horse Industry Major]

37 - A Must-Visit Course Before the Air Force [Hanseo University Helicopter Operations]

38 - Re-enrollment, Let's go to Howon University Department of Practical Music

39 - Top level universities worldwide (feat.1million subscriber pledge) [Overseas Univ]

40 - Korean Studies without Koreans [The University of Hong Kong, Korean Studies]

41 - Finally, Jeongwaja in court [Kookmin College of Law]

42 - Reservation Tips from future hoteliers [Sejong Univ. Hotel and Tourism Management]

43 - Ways to put out the fire from firefighter [Fire and Safe Management at Kyungmin Univ]

44 - The Top-tier level in Engineering, KAIST [KAIST Aerospace Engineering]

45 - Professor Shares A Hangover Remedy [Inha University Department of Biotechnology]

46 - Hanyang University ERICA Department of Dance and Arts

47 - Professor, do you really not notice people ducking out?

48 - MZ Orientations (OT) nowadays;; [Ajou University Department of Pharmacy]

49 - Broke the Microphone at the Vocal Department [Hanyang University Vocal Music Dept]

50 - What color do you like? [Chung-Ang University Department of Political Science]

51 - I'm an Ewha University Boy [Ewha Womans University Department of Ceramic Arts]

52 - Department for nuclear-level geniuses only [SNU Department of Nuclear Engineering]

53 - Jeongwaja goes to a prestigious university in Japan [Osaka University]

54 - Working part-time in Japan and setting people up together [Part-time/USJ]

55 - Department that eats airline food for lunch [KAU Department of Drones]

56 - Teacher, how are babies made? [Seoul Nat'l University of Education]

57 - Department where they become Webtoon writer [Yonsung Univ. Webtoon Contents Dept.]

58 - Mom VS Girlfriend drowning in water, what's your choice? [PKNU Marine Sports Dept]

Pukyung National University Marine Sports Department

59 - How to choose the toothpaste according to the Department of DH [Gachon Univ. DH Dept]

Gachon University Dental Hygiene Department

60 - #1 University that Jeongwaja should avoid [Police University]

61 - The military train will be departing[Woosong Univ. Dept of Railway Vehicle System]

Woosong University’s Railway Logistics College

62 - Finally Re-re-enlisting in the Military [Air Force Academy]

63 - It's Not Over Until It's Over [Incheon Nat'l University Summer Semester]

64 - Which Department Reigns Supreme in Korea? [Union MT Part 1]

65 - Which University is the Best in Korea? [Union MT Part 2]

66 - Jeongwaja Acting? Surprised, Right? [Kyung Hee University Theater and Film Department]

67 - The department where "Shi-X" means "sorry" [HUFS Arabic Department]

68 - Bread Unnie, Kim Yeon-koung, is a freshman here at [KNOU Department of Sports for All]

69 - Most Heartbreaking Fairy Tale [Danguk University Creative Writing Department]

70 - POSTECH vs KAIST Showdown Stories [POSTECH Computer Science Department]

71 - Legendary ER Stories Unveiled [Eulji University Paramedic Department]

72 - The Day Before the CSAT [SeoulTech Visual Communication Design Department]

73 - Get service at a mala tang restaurant [Myongji Chinese Language and Literature]

74 - Perfect shot tips from Modeling Dept. [Seokyeong Univ's Modeling & Acting Major]

75 - How Much Do Music Students' Instruments Cost? [Chugye University for the Arts]

76 - The Truth About Jeju Uni's Tangerine Packaging Department [Tourism Management]

77 - Why take medicine 30 minutes after a meal? [AJOU UNIVERSITY College of Pharmacy]

78 - Came to build a ship [MNU Naval Architecture And Ocean Engineering]

79 - How to get 1 million won a year [Chung-Ang University Social Welfare Department]

80 - Dentist Tips from a Dental Student [SNU Graduate School of Dentistry]

81 - Episode 81

82 - Episode 82

83 - Episode 83