A play is presented at Tōka's school which chronicles the life of Yumiko from before she was born when her parents were very young through her traumatic events in her life up to the present day.
“上津未原”に渦巻く、切なく哀しい想い……。禍々しくも美しいその土地を守護する守東家の歴史。守東由美子が生まれ、苦しみながら辿って来た路。夢でもなく、幻でもなく、現実に起こった出来事……。人の想いに操られ、時が運ぶ宿命に翻弄された人の歴程。幕は開く。『世界は確かに在る』と再び心に刻むために……。