Mermaid Got Married is the Splash-like tale of a beautiful mermaid who loses her pearl when she saves high school teacher Dior Cheng from drowning. It turns out she also saved him when they were both kids so there's an immediate connection between the two. Unfortunately, the pearl is the source of her power so she follows him onto land.

Mermaid Got Married is the Splash-like tale of a beautiful mermaid who loses her pearl when she saves high school teacher Dior Cheng from drowning. It turns out she also saved him when they were both kids so there's an immediate connection between the two. Unfortunately, the pearl is the source of her power so she follows him onto land.

Kasumi is shocked to discover that her older sister's fiance is the man she first fell in love with five years ago in high school. At the time, he was her high school teacher and ultimately quit his job racked with guilt over their relationship. Kasumi was deeply hurt and struggled for a long time to overcome her sadness. Now the two of them must come to terms with their secret past before the ones they care about in the present are hurt.

Kasumi is shocked to discover that her older sister's fiance is the man she first fell in love with five years ago in high school. At the time, he was her high school teacher and ultimately quit his job racked with guilt over their relationship. Kasumi was deeply hurt and struggled for a long time to overcome her sadness. Now the two of them must come to terms with their secret past before the ones they care about in the present are hurt.

Ono Yasuomi is a math teacher at a private institute. He doesn't have a girlfriend and he is engrossed in math. Ono Yasuomi doesn't complain about his life, but he feels unease about being single for the rest of his life. His dates with women do not go smoothly. Ono Yasuomi doesn't now what to do to fix that. His student Akimoto Kasumi tells him that he is not normal. Ono Yasuomi asks Akimoto Kasumi to teach him to become normal.

Ono Yasuomi is a math teacher at a private institute. He doesn't have a girlfriend and he is engrossed in math. Ono Yasuomi doesn't complain about his life, but he feels unease about being single for the rest of his life. His dates with women do not go smoothly. Ono Yasuomi doesn't now what to do to fix that. His student Akimoto Kasumi tells him that he is not normal. Ono Yasuomi asks Akimoto Kasumi to teach him to become normal.

Tooru Igarashi is a lecturer with charisma, working at a prestigious preparatory school. Recently, he drinks a lot, and his life falls apart. Maki Endo is a student at a part-time high school. Every day, she is exhausted with working multiple jobs to cover her expenses. One day, Tooru and Maki happen to meet each other. Maki wants to graduate high school to get a regular job and asks Tooru to tutor her for her test–retest. After Tooru quit his prep school job, he has lost his pride and passion for teaching but he agrees to teach Maki and get her into the University of Tokyo.

Tooru Igarashi is a lecturer with charisma, working at a prestigious preparatory school. Recently, he drinks a lot, and his life falls apart. Maki Endo is a student at a part-time high school. Every day, she is exhausted with working multiple jobs to cover her expenses. One day, Tooru and Maki happen to meet each other. Maki wants to graduate high school to get a regular job and asks Tooru to tutor her for her test–retest. After Tooru quit his prep school job, he has lost his pride and passion for teaching but he agrees to teach Maki and get her into the University of Tokyo.

The story of a high school student whose parents died, leaving her with no other relatives. In order to survive she has been working as a hostess in a cabaret, until the day she met her homeroom teacher there. She ended up losing her job and has no other alternative than to begin to live with her homeroom teacher. These two people exchange a promise and start living a secret life, leading to an odd lifestyle for both of them.

The story of a high school student whose parents died, leaving her with no other relatives. In order to survive she has been working as a hostess in a cabaret, until the day she met her homeroom teacher there. She ended up losing her job and has no other alternative than to begin to live with her homeroom teacher. These two people exchange a promise and start living a secret life, leading to an odd lifestyle for both of them.

Nitta Masaki is about to start work as a music teacher at a high school. The high school has experienced turbulence due to the missing person case of the prior music teacher. On the night before Nitta Masaki's first day of work, he visits the music classroom and plays the piano. There, he meets student Izumi Sae. She is his student in homeroom class. Through the missing person case, Nitta Masaki and Izumi Sae soon get closer to each other. Nitta Masaki doesn’t want to admit that his feelings for her has turned into love. Meanwhile, Izumi Sae has no doubt that her feelings for him is love. They then part ways.

5 years later, Nitta Masaki & Izumi Sae meet again. There doesn't seem to be any obstacles in front of them to prevent their love, except for one thing. That is Nitta Masaki is a married man, who has a wife.

Nitta Masaki is about to start work as a music teacher at a high school. The high school has experienced turbulence due to the missing person case of the prior music teacher. On the night before Nitta Masaki's first day of work, he visits the music classroom and plays the piano. There, he meets student Izumi Sae. She is his student in homeroom class. Through the missing person case, Nitta Masaki and Izumi Sae soon get closer to each other. Nitta Masaki doesn’t want to admit that his feelings for her has turned into love. Meanwhile, Izumi Sae has no doubt that her feelings for him is love. They then part ways.

5 years later, Nitta Masaki & Izumi Sae meet again. There doesn't seem to be any obstacles in front of them to prevent their love, except for one thing. That is Nitta Masaki is a married man, who has a wife.