Season 4

🎉 Season 4 finally starts🎉 I went to the orientation as a class of ’24 freshman! Useful tips on school Including the study of drinking games, which are an essential part of the culture of first-year students! Will Jeongwaja finish the orientation without making a fool of himself?

A department where the voice is the instrument? 🎶 I visited the vocal music department at Hanyang University! From tips for taking care of your throat In the dramatic world of opera And.. Jeongwaja is on stage with his favorite vocalist! Will Jeongwaja be able to finish the day smoothly?

Learning about politic and relations from A to Z Visiting the Department of Political Science and International Relations! From Korea's turbulent political history To various trading methods! But... Will we be able to finish today's shoot safely…?😕

Jeongwaja seems a bit more excited than usual?! Today's the day he visits a women's university. 😎 Exploring the world of ceramics, from the famous scenes in "Ghost" to the world of sculptures, rich with literature and philosophy! What will ChangSub create in pottery class today??

Jeongwaja is finally in SNU 🤩 To settle nuclear-level curiosity about nuclear engineering we went to SNU Department of Nuclear Engineering! From A to Z about reactors and even experiments to learn about spent nuclear fuel! Can Jeongwaja survive all these nuclear?

Jeongwaja abroad part 2! Osaka this time🇯🇵 Jeongwaja showing off his Japanese skills?! For the first time ever on Jeongwaja! From classes conducted in Japanese To Japan’s unique campus life! Will Jeongwaja be able to return home safely?

Part 2 of studying in Japan! Working part-time like international students💸 Jeongwaja getting tired of serving?! From working part-time at a Korean bar full of students To the actual vacation Jeongwaja has dreamed of! Will Jeongwaja be able to finish his part-time job and go on vacation?

Isn’t this the Air Force?🦅 Attending the drone department at the Korea Aerospace University for experience before going to the Air Force😉 From autonomous driving To balancing the drone with automatic control! Why are we only doing coding and math here instead of flying drones though? Will Jeongwaja be able to survive from coding hell?

Jeongwaja's a teacher now?! 👨‍🏫 Finally! We're going to Seoul National University of Education which so many Snackies requested! 🏫 From learning the right way to debate social issues to mathmatically-challenged Jeongwaja's unexpectedly impressive performance! Today's lunch is a designated elementary school kid lunch. What's on the menu for Jeongwaja?

The brilliant comeback of Lee ChangSub from the tonkatsu era🕺 Jeongwaja returning to Yeonsung University to inspect the increased academic menu!🍽 From conveying emotions with line work To creating form and space in cartoons! Will Jeongwaja survive safely among the drawing experts?

This is Busan🏖 Visiting Pukyung National University Marine Sports Department, which goes well Busan!🌊 From how to rescue a drowning person with a rescue tube To Jeongwaja’s first 3.5m dive! Will Jeongwaja be able to survive underwater?

Raise your hand if it hurts✋🏻 Visiting Gachon University Dental Hygiene Department to find out the secret to maintaining healthy teeth! 🦷🪥 From scaling practice To detailed theory classes on dental tissue! What is the current state of Jeongwaja’s dental health?

Not that kind of Jeongwaja..😂 Today, we’re visiting the Police Academy! From experiencing CSI To pistol shooting classes! Will Jeongwaja become a police officer?

A trial version before going to the Air Force?! Today, we’re visiting Woosong University’s Railway Logistics College! From complicated circuits To driving an electric train! 🚃 Encountering emergency situations while driving 🚨 Will Jeongwaja be able to arrive safely at the next station?

Jeongwaja is re-enlisting in the military AGAIN✈️ In order to keep our promise to 1.5 million Snackies, We are going to the Air Force Academy! From learning about wind required for aircraft operations To training to adapt to emergency situations! But.. partner ends up fainting during the G test..! 😱 Will Jeongwaja be able to defy gravity?

It's the last day of school... But not for me! 😅 Going to university during vacation to attend summer classes! From exciting trivia about viruses seen in movies To the first-ever major repeat semester! Will Jeongwaja be able to finish school without a hitch?

A Full Gathering of All Former Jeongwaja Guests! The 1st Annual Jeongwaja Union MT! 🏖 From department pride competitions to the ultimate MT BBQ party! 🥩 Before heading to MT, Jeongwaja is given a partner-finding mission...! Will Jeongwaja find all the partners and make it to MT?

After a wild first night, the second day of the Union MT dawns bright and early☀ From the classic hangover ramen🍜 to the inter-university sports competition to decide the ultimate university! But what’s this? Rain from the morning?!☔ Will Jeongwaja and his friends be able to finish the sports competition safely?