The behind-the-scenes footage of “Crushology 101” is a total delight for fans, showing just how much fun the cast is having off-camera — and giving us even more reason to fall for this charming new college romance drama.

“Crushology 101,” based on a popular webtoon, follows Ban Hee Jin (Roh Jeong Eui) — nicknamed “Bunny” — as she navigates campus life and romance after a rough breakup. Things take an unexpected turn when several charming guys suddenly enter her life, each bringing their own flavor of chaos and affection.

The making-of video gives us some golden moments:

• 💬 The Director’s Praise: He highlights the unique chemistry between Lee Chae Min (Jae Yeol) and Kim Hyun Jin (A Rang), saying their scenes have “such different vibes” — which is a fun hint that the love triangle (or square?) will have a lot of emotional range.
• 🍖 The BBQ Scene: Lee Chae Min shows his “serious” side when it comes to grilling meat (lol) and even earns praise from Roh Jeong Eui for his dedication. She sweetly offers the behind-the-scenes camera crew a bite, melting hearts with her thoughtfulness.
• 🎭 Hong Suk Chun’s Cameo: The beloved actor and entertainer makes a short but memorable appearance. He jokes about being nervous around such a visually stunning cast, which adds a fun, self-aware touch to the BTS.
• 🪜 Shelf Scene Fumble: A scene where Chae Min was supposed to help Roh Jeong Eui put something on a high shelf flips into a mini-comedy moment when she nails it without help, leaving the crew laughing.
• 🌿 Outdoor Chemistry: The outdoor scenes featuring Roh Jeong Eui, Lee Chae Min, and Kim Hyun Jin show the trio’s playful energy — teasing, laughing, and practicing lines together. It’s clear their off-screen friendship adds real warmth to their on-screen dynamics.