Crushology 101 (Korean: 바니와 오빠들) is a 2025 South Korean television series starring Roh Jeong-eui, Lee Chae-min and Cho Jun-young. Based on the 2019 Kakao Webtoon Bunny and Her Oppas by Ni-eun, the series depicts the love story of the female protagonist Bunny, who is surrounded by four attractive boys after breaking up with her dark first love. It premiered on MBC TV on April 11, 2025, and aired every Friday and Saturday at 21:50 (KST). It is also available for streaming on Kocowa and Viu in selected regions.
Its eighth episode on May 3, 2025 drew a rating of 0.7%, the lowest ever recorded for a drama airing in the prime time slot on a terrestrial television network. This record is shared with the February 20, 2025 episode of Kick Kick Kick Kick (which thereafter was moved to a late-night time slot and received lower ratings). Its peak single-episode rating of 1.5% and its overall average ratings of 1.0% are also the lowest ever recorded for a drama airing entirely in the prime time slot on a terrestrial television network.
Contents
Synopsis
The drama follows a college student, Bunny, who breaks up with her first love after a disastrous relationship. Healing from a broken heart, she is suddenly courted by not one but four attractive men.
Cast and characters
Main
Roh Jeong-eui as Ban Hee-jin
A top sculpture student at Yein University who is better known by her nickname, Bunny. Although she excels both academically and personally, she is labeled a hopeless romantic after her first relationship ends in failure. Her love life takes a new turn when several charming men enter her life.
Lee Chae-min as Hwang Jae-yeol
A talented visual design student at Yein University and the representative of the Visual Design Department. Aspiring to become an art director, he is widely respected by classmates, seniors, juniors, and female students across campus.
Cho Jun-young as Cha Ji-won
A student from the top 0.1% who seems to have everything except flaws. Born into a wealthy family with good looks, intelligence, and a warm personality, he is the dream senior every freshman admires.
Kim Hyun-jin as Jo A-rang
A promising and highly talented sculptor in the art world. Blessed with striking good looks and effortless flirting skills, he is a charismatic figure who easily captures the hearts of women.
Hong Min-gi as Jin Hyun-oh
A Social Sports major at Gaun University who is devoted to basketball and Bunny's first love.
Supporting
Kim Min-chul as Dong-ha
A college student. He is Jae-yeol's best friend, and he wants to become an art director.
Choi Ji-su as Nam Kkot-nim
Bunny's best friend.
Lee Ji-hoon as Ban Yeong-min
Bunny's father.
Kim Hyun-mok as Ko Bong-su
Bunny's ex-boyfriend
Jeon Joon-ho as Chun-sik
Wang Bit-na as Hwang Jae-yeol's mother
Nam Kyu-hee as Kwon Bo-bae
A campus goddess and Bunny's childhood friend. She has a warm personality and genuinely supports Bunny.
Jeon So-young as Han Yeo-reum
She is Jaeyeol's first love and the youngest sports announcer.
Production
Development
Crushology 101 is written by Sung So-eun, directed by Kim Ji-hoon, and produced by Kakao Entertainment. It is based on the Kakao Webtoon Bunny and Her Oppas: Crushology 101 by author Ni-eun, which has recorded 170 million cumulative views.
Casting
On April 30, 2024, Hankook Ilbo reported that Roh Jeong-eui had been cast as the lead role in the series. On May 1, it was reported that Lee Chae-min had decided to appear and was about to start filming. On September 19, Roh, Lee, and Cho Jun-young were confirmed.