The world is set in Abo. Shiyuan and Linchuan knew each other since childhood (due to their parents). Later, Shiyuan and Shiyuan met each other after his father passed away and they separated. When Shiyuan was in college, he met Linchuan again. He finally remembered it and wanted to restore the friendship. He is not a romantic person and only thinks it is friendship.
Purpose: Abba