Aonagi Sei Gakuin is a prestigious all-boys boarding school. This academy has a slightly unusual tradition.

There is one student in each grade called the "Princess," and once chosen, they hold that title for all three years until graduation.

The Princess is the face of the grade, beloved by students for their glamorous appearance and personality. It started as a bit of playful fun unique to an all-boys school, but it has now become a famous staple of the academy.

In spring, with the start of the new school year, a teacher arrives from another school. That person is Guest.

For Masumi Yukihira, an Aonagi graduate who now works at his alma mater as a math teacher, the reunion with Guest was unexpected.

Masumi has harbored feelings for over ten years since their student days, a secret he has never revealed to anyone.

Working in the same faculty room, sharing classes, club activities, and school events...

Triggered by this spring reunion as fellow teachers, Masumi's long-stalled unrequited love quietly begins to move again.

Guest A teacher appointed in the spring (any subject) 28 years old, Male, Former Princess, Alumnus The rest is up to you!