Cellphone app Love Alarm is created. If someone likes you and they are within 10 meters of you, the alarm for the app rings. The app also shows how many people like you, but the app doesn't reveal specific details on who likes you. Kim Jo Jo is a high school student. She is pretty and smart. She seems like a cheerful person, but her parents died when she was young. Since the death of her parents, Kim Jo Jo has lived with aunt's family. Living there is not easy for Kim Jo Jo. She doesn't download the app Joalarm as her phone isn’t new enough. Meanwhile, Hwang Sun Oh is a popular male student at the same high school where Kim Jo Jo attends. He is the son of a wealthy family, but he is not loved by his parents. His best friend Lee Hye Yeong also attends the same high school. Hwang Sun Oh notices that his best friend Lee Hye Yeong likes Kim Jo Jo. Hwang Sun Oh wants to know if his friend really likes her, so he kisses her.

Dating app. Cellphone app Love Alarm is created. If someone likes you and they are within 10 meters of you, the alarm for the app rings. The app also shows how many people like you, but the app doesn't reveal specific details on who likes you. Kim Jo Jo is a high school student. She is pretty and smart. She seems like a cheerful person, but her parents died when she was young. Since the death of her parents, Kim Jo Jo has lived with aunt's family. Living there is not easy for Kim Jo Jo. She doesn't download the app Joalarm as her phone isn’t new enough. Meanwhile, Hwang Sun Oh is a popular male student at the same high school where Kim Jo Jo attends. He is the son of a wealthy family, but he is not loved by his parents. His best friend Lee Hye Yeong also attends the same high school. Hwang Sun Oh notices that his best friend Lee Hye Yeong likes Kim Jo Jo. Hwang Sun Oh wants to know if his friend really likes her, so he kisses her.

After an earthquake destroys Xiang Qin's house, she and her father move in with the family of her father's college buddy. To her surprise, her new kind and amicable aunt and uncle are the parents of her cold and distant schoolmate, Jiang Zhi Shu, a genius with an IQ of 200 whom not too long ago rejected her after she confessed her feelings for him. Will the close proximity give her a second chance to win Zhi Shu's heart? Or will her love for him end under his cold words?

Taliw, a cute, lively and clumsy girl, has had a crush on a popular and genius named Tenten, who is a new student with an IQ of 200. Tenten just returned from Japan with his family. How will Taliw deal with her feelings towards Tenten? Sometimes, he treats her kindly and cares about her. Yet, sometimes he teases and embarrasses her in front of all the students in their school.

It starts off with high school classmates Chen Xiao Xi and Jiang Chen who are also neighbors. Xiao Xi, a cheerful girl who doesn't study much, is expressive about her admiration towards Jiang Chen, the popular guy known for his looks and high grades. Together with their fellow classmates the funny Lu Yang, athletic but loyal Jing Xiao, and cool swimming team member Wu Bo Song, they embark on high school life to university until their adult life.

A love story between an ordinary girl with a stubborn crush and the school genius adored by all that begins when they end up living in the same house.

When a fool falls in love with someone way out of her league, is there hope for a happy ending? Xiang Qin is an ordinary girl who has a persistent crush on Jiang Zhi Shu. After she pours her feelings to him and gets cruelly rejected, Xiang Qin considers giving up for good. However, things happen and her dad takes her along to move in temporarily with Zhi Shu's family. In a sweet and pure romance set in high school, Xiang Qin's cheerful buoyancy shines. Zhi Shu begins to wonder whether Xiang Qin is merely a deviation or the person that he's fated to be with.

At a high school entrance ceremony, high school student Kotoko Aihara, who isn't that smart, notices pretty boy Naoki Irie. She falls in love with him immediately. Kotoko initially doesn't express her feelings to him, but finally has a chance to tell him how she feels. Unfortunately, Naoki turns Kotoko down, saying "I don't like dumb women."
One day, Kotoko Aihara's house is severely damaged by a meteorite. Until the house is rebuilt, Kotoko Aihara and her father decide to live with her father's friend. When Kotoko Aihara moves to her new temporary house, she is surprised to learn that Naoki Irie lives there as well.

Based on the popular manga, Oh Ha Ni is a clumsy student who falls for the perfectionist, Baek Seung Jo. However, Seung Jo is indifferent towards her and rejects her love. When Ha Ni's house collapses, she and her father move into his long-time friend's house. It turns out that Seung Jo is the friend's son, and Ha Ni is given the opportunity to be near the boy she loves. Will she be able to move Seung Jo's heart?

The sequel of It Started With A Kiss begins with Xiang Qin and Zhi Shu's wedding and honeymoon.
Even after marriage, they experience problems and interferences within their marriage such as mistaken pregnancy, misunderstandings, and new found jealousies. Xiang Qin and Zhi Shu switch to medical school to become nurse and doctor. During that time, Zhi Shu meets new rivals who wish to outdo him and Xiang Qin makes four new friends, and one of them likes her and wishes to replace Zhi Shu.
How will their lives turn out to be?

Taliw, a cute, lively and clumsy girl, has had a crush on a popular and genius named Tenten, who is a new student with an IQ of 200. Tenten just returned from Japan with his family. How will Taliw deal with her feelings towards Tenten? Sometimes, he treats her kindly and cares about her. Yet, sometimes he teases and embarrasses her in front of all the students in their school.

A handsome surgeon tries to make up for his biggest regret. When he earns the chance to go back in time to his senior year of high school, he strives to overcome his cowardice to help his classmate Han Fei and prevent an impending tragedy.
Ever since Han Fei unintentionally helped Wu Jing Hao out of a sticky situation in school, she has never left his line of sight. Wu Jinghao begins to notice everything about Han Fei, that she is often distracted in class and impossible to get close to as if she had spikes like a hedgehog. Wu Jinghao eventually learns that Han Fei once took her friend to eat barbecue, yet an accident resulted in her friend being burned and falling into a coma. Han Fei has lived in guilt since then. Wu Haojing patiently stays by as he encourages her to step out from the shadows.

“Operation Love” tells the story of a man who travels back in time to change his fate with his first love who is in the present about to marry another man.