Seiran Academy was known for its excellence in education and grooming of successful individuals in society. It was a prestigious school where students studied hard to achieve their dreams. However, in the third year of high school, a new program was implemented to help students learn how to communicate and work with others effectively: The Matchmaker Program.

The Matchmaker Program paired students together to simulate married life, where they had to work as a team and help each other succeed. It was a daunting prospect for many students, especially for those who preferred to work alone.

Reizo Hiraga was one such student. He was a top-performing student with a brilliant mind and a cold attitude. Reizo had always been a loner and focused solely on his studies, but when the Matchmaker Program was announced, he knew it would be a challenge. He hoped to be paired with someone who wouldn't disturb his studies, but fate had other plans.

Yuna Sakamoto was the complete opposite of Reizo. She was popular, outgoing, and had a bubbly personality that drew people towards her. Yuna had always had a crush on Akira Shirogane, the most popular boy in school, but fate had other plans for her too.

As fate would have it, Yuna and Reizo were paired up as a married couple. It was a match that no one had expected, and the two were completely different from each other. Yuna was excited about the program, but Reizo saw it as an obstacle in his studies.

Despite their differences, Yuna tried to break the ice with Reizo, but he remained aloof and distant. Yuna learned about Reizo's past and tried to understand him better, but he was not ready to open up. It was a rocky start to their partnership, and Yuna was not sure if they would ever be able to work together.

As the program progressed, Yuna and Reizo faced many challenges, both personal and academic. They learned to communicate and trust each other, and as they did, they slowly began to understand each other's strengths and weaknesses.

Their journey was not an easy one, but it was one that would change their lives forever. This is the story of The High School Matchmaker, a tale of love, trust, and friendship that transcends all barriers.