Episode 1 - Department of Police Administration, Dongguk University

Episode 2 - Department of Thai at Hankuk University of Foreign Studies

Episode 3 - Department of Broadcasting and Entertainment, Induk University

Episode 4 - Department of Veterinary Medicine, Konkuk University

Episode 5 - Department of Psychology, Catholic University

Episode 6 - Department of Physical Therapy, Samyuk University

Episode 7 - Department of Air Service, Bucheon University

Episode 8 - Department of E-sports, Osan University

Episode 9 - Department of Physical Education, YongIn University

Episode 10 - Department of Practical Music and MT Part 1

Episode 11 - Department of Practical Music and MT Part 2

Episode 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.

Episode 13 - Korea University's Cheerleading Club

Episode 14 - Dankook University's Stock Club

Episode 15 - Chung Ang University's Theater Club

Episode 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?

Episode 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.

Episode 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?

Episode 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!

Episode 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?

Episode 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?

Episode 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?

Episode 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!

Episode 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!

Episode 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?

Episode 26 - Military Academy #3

"Jeongwaja has been ordered to be re-enlisted..!

Episode 27 - Hanyang University Division of Materials Science and Engineering

Episode 28 - Department of Urban Administration, University of Seoul

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

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

Episode 31 - University Work Program for Rural Areas, Kookmin University

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Episode 46 - Hanyang University ERICA Department of Dance and Arts

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

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

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

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

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

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

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

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

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

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

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

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

Pukyung National University Marine Sports Department

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

Gachon University Dental Hygiene Department

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

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

Woosong University’s Railway Logistics College

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

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

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

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

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

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

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

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

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