Crushology 101

Crushology 101 (Korean: 바니와 오빠들) is an ongoing South Korean television series starring Roh Jeong-eui, Lee Chae-min, Kim Hyun-jin, Kim Min-chul, Hong Min-gi and Jo Joon-young. 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.

Crushology 101
Promotional poster
Hangul	바니와 오빠들
Literal meaning	Bunny and Her Boys
Revised Romanization	Baniwa oppadeul
McCune–Reischauer	Paniwa oppadŭl
Genre	Romance drama[1] Coming-of-age[2]
Based on	Bunny and Her Boys by Ni-eun
Written by	Sung So-eun[3] Lee Sul[3]
Directed by	Kim Ji-hoon[3]
Starring	Roh Jeong-eui Lee Chae-min Jo Joon-young Kim Hyun-jin Kim Min-chul Hong Min-gi
Music by	Lee Kwang-hee[4]
Country of origin	South Korea
Original language	Korean
No. of episodes	10
Production
Executive producers	Kim Min-ji[3] Park Ji-hye[3]
Producers	Lee Dae-yong[3] Jang Se-jeong[3]
Production company	Kakao Entertainment
Original release
Network	MBC TV
Release	April 11, 2025 (2025-04-11) – present

It premiered on MBC TV on April 11, 2025, and airs every Friday and Saturday at 21:50 (KST). It is also available for streaming on Kocowa and Viu in selected regions.

Cast and characters

Main

• Roh Jeong-eui as Bunny (Ban Hee-jin)^[5]
• Lee Chae-min as Hwang Jae-yeol^[5]
• Jo Joon-young as Cha Ji-won^[6]
• Kim Hyun-jin as Jo A-rang^[7]
• Hong Min-gi as Jin Hyun-oh^[8]
• Kim Min-chul as Dong-ha^[9]

A college student. He is Jae-yeol's best friend, and he wants to become an art director.

Supporting

• Choi Ji-su as Nam Kkot-nim^[10]

Bunny's best friend.

• Lee Ji-hoon as Ban Yeong-min^[11]

Bunny's father.

• Kim Hyun-mok as Ko Bong-su^[12]

Bunny's ex-boyfriend

• Jeon Joon-ho as Chun-sik^[13]
• Wang Bit-na as Hwang Jae-yeol's mother^[14]
• Nam Kyu-hee as Kwon Bo-bae^[15]

A campus goddess and Bunny’s childhood friend. She has a warm personality and genuinely supports Bunny.

• Jeon So-young as Han Yeo-reum^[16]

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 of the same name by author Ni-eun, which has recorded 170 million cumulative views.^[5][17]

Casting

According to Hankook Ilbo on April 30, 2024, Roh Jeong-eui had been cast as the lead role in the series.^[18] On May 1, it was reported that Lee Chae-min had decided to appear and is about to start filming.^[17] On September 19, Roh, Lee, and Jo Joon-young had been confirmed to appear.^[1]

Release

Crushology 101 premiered on MBC TV on April 11, 2025, and airs every Friday and Saturday at 21:50 (KST).^[1][19]

Ratings

Average TV viewership ratings (Nationwide)

Ep.	Original broadcast date	Average audience share (Nielsen Korea)[20]
1	April 11, 2025	1.3% (34th)
2	April 12, 2025	0.9% (59th)
3	April 18, 2025	1.5% (30th)
4	April 19, 2025	1.1% (47th)
5	April 25, 2025	1.1% (36th)
6	April 26, 2025	0.9% (54th)
7	May 2, 2025	0.8% (47th)
8	May 3, 2025	0.7% (69th)
9	May 9, 2025	1.2% (32nd)
10	May 10, 2025	0.8% (58th)
11	May 16, 2025
12	May 17, 2025
Average		—
In the table above, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.