My Sparkling Prince-sama (READ RIGHT TO LEFT)

While Hanami was at the beach during one summer vacation, she met a boy who was making a pendant by the seaside. After he left she found a pendant with a name tag.

When she went back to high school the following year, Hanami joined the Jewellery Club, and to her surprise, the president of the club was the student council president, who was a complete... nerd.