Season 1

E1. Department of Police Administration, Dongguk University

Nov 11, 2022 · 19m

E2. Department of Thai at Hankuk University of Foreign Studies

Nov 18, 2022 · 18m

E3. Department of Broadcasting and Entertainment, Induk University

Nov 25, 2022 · 21m

E4. Department of Veterinary Medicine, Konkuk University

Dec 2, 2022 · 18m

E5. Department of Psychology, Catholic University

Dec 9, 2022 · 18m

E6. Department of Physical Therapy, Samyuk University

Dec 16, 2022 · 20m

E7. Department of Air Service, Bucheon University

Dec 23, 2022 · 18m

E8. Department of E-sports, Osan University

Dec 30, 2022 · 20m

E9. Department of Physical Education, YongIn University

Jan 6, 2023 · 23m

E10. Department of Practical Music and MT Part 1

Jan 13, 2023 · 20m

E11. Department of Practical Music and MT Part 2

Jan 20, 2023 · 25m

E12. Seoul National University's Broadcasting Club

Feb 16, 2023 · 20m

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

E13. Korea University's Cheerleading Club

Feb 23, 2023 · 19m

E14. Dankook University's Stock Club

Mar 2, 2023 · 20m

E15. Chung Ang University's Theater Club

Mar 9, 2023 · 20m

E16. Department of Business Administration, Yonsei University

Mar 23, 2023 · 19m

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?

E17. Department of Mechanical Engineering, Busan University

Mar 30, 2023 · 23m

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.

E18. Department of Physics, Kyung Hee University

Apr 6, 2023 · 21m

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?

E19. Department of Beauty Art, Seokyeong Unviersity

Apr 13, 2023 · 21m

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!

E20. Department of Architecture, Soongsil University

Apr 24, 2023 · 25m

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?

E21. Department of Media Communication, Sungkyunkwan University

Apr 27, 2023 · 27m

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?

E22. Department of Companion Animal Health, Yeonsung University

May 4, 2023 · 21m

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?

E23. Department of Nursing, Ajou University

May 11, 2023 · 24m

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!

E24. Department of Fashion Design, Hansung University

May 25, 2023 · 21m

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!

E25. Department of Hotel Culinary Arts, Korea Hotel & Tourism Technical College

Jun 1, 2023 · 23m

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?

E26. Military Academy #3

Jun 8, 2023 · 27m

"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

E27. Hanyang University Division of Materials Science and Engineering

Jun 15, 2023 · 25m

E28. Department of Urban Administration, University of Seoul

Jun 22, 2023 · 21m

E29. Division of Navigation Science, Korea Maritime and Ocean University

Jun 29, 2023 · 25m

E30. Department of Early Childhood Education, Kyungin Women's University

Jul 6, 2023 · 24m