Tsuki no Hikari, Taiyou no Kage

Miki (the default name of the protagonist) is a high school student who has a fiance who was predetermined by her parents. However, she only knows her fiance from a photograph from his childhood. He just so happens to be a senior at her school and she falls in love with him at first sight. He goes to England for one year to study abroad and promises to keep in touch with her often. He stops contacting her and heart starts to waver. "Does he really love me?" "Keep this love or look for other love?"