Xianzhizuka Takashi had a fiancée to whom he was engaged. At Sakuran Junior High, the pair had no connection at all, despite being engaged and appearing to know each other barely at all to everyone around them.
Tennoji Rie had a fiancé to whom she was engaged. At Sakuran Junior High, she wanted to get to know him better, so she asked him to date her.
But when it came time to choose a high school, she enrolled at Robelia instead. It was only later that the Tennoji family realized things were not going quite as planned. Tennoji Rie, who was doted on by her family, transferred from Robelia back to Sakuran in her final year of high school.
Theme: Life is made up of one miracle after another.