Crush on You (순정만화) is webtoon by Kang Full It is published by Daum and becoming popular webtoons of site is evolves around two unconventional romances with a noticeable age disparity. it was turn live action movie as Hello Schoolgirl
played by Yoo Ji-tae
A 30 year old civil servant who was shy and moved to apartment as Soo-young's neighbour. Yeon-woo lost his parents at young age and was raised by his grandparents and relatives. Yeon-woo had blind dates with women but it unsuccessful. he met Soo-young whom he befind her after she threw garbage to him near dustbin and elevator when Soo-young was going to school and gave his tie to her. the relationship between them turned closer has faced problems include Soo-young's mother was shocked as he struggled for feelings to Soo-young in the end both he and Soo-young are confessed loving each other.
played by Lee Yeon-hee
An 18 year old High School student who was cheerful but fiery young woman who lived her mother since her father left them when Soo-young was young and treated as princess by her mother. she met Kim Yeon-woo who was her neighbour after she threw garbage towards him and meet again in elevator. when she and best friend Da-jung was in train she asked Yeon-woo to give the tie and become friends with him however the relationship between them turn closer has faced problems include her mother Soo-young went to college for good and almost dating Kang Sook but struggled feelings for Yeon-woo in the end she and Yeon-woo are confessed loving each other.
played by Kang-in Yeon-woo's colleague is 22 year old high school graduate who become involved with Kwon Ha-kyung after met her at park then they begun dating for short while. Sook started feelings for her and kissed her caused too much shock. in fact Ha-kyung's boyfriend Kyu-chul was killed while on Military service which Sook didn't know about this until what happened and follow Kyu-chul's shoes to see Ha-kyung's happiness. he almost dated Han Soo-young but broke up.
played by Chae Jung-ah a 29 year-old melancholy woman who was photographer who clicked photos after her boyfriend Kyu-chul was died as soldier. still mourning for his loss Ha-kyung takes his job when she met Kang Sook at train station whom they begun relationship although she never loved him in fact she waiting Kyu-chul went to Military service before he died she visited his parents by every time before she surprised Kang Sook's return from Military service as changed person
Soo-young's best friend who thought that Kang Sook was Soo-young's boyfriend and met Yeon-woo at sky train. later she completed the exams.
Ha-kyung's boyfriend and photographer who was killed as soldier caused Ha-kyung shocked also his parents
Soo-young's mother who was eccentric woman who raised her daughter after her husband left them some years ago. after she see her daughter holding hands with Yeon-woo Kim she struggled in fact Yeon-woo is orphan.
an elderly couple who worked at Laundromat shop who lost her only son two years ago and Ha-kyung visited them many times.
Yeon-woo is frequently visited them for giving clothes to wash. the mother gave her son's clothes but the father doesn't want Yeon-woo to replace his late son.