Mayuko goes down memory lane after getting a few visitors at her family bookstore.
Can't... Can't be undone! 
And it was my fault!
Das kann ich nie wieder gutmachen!
Lo que pasó…
Ce qui s’est passé est irréparable !
Não dá para voltar no tempo.
E foi culpa minha!
Я не смогу… исправить то, что натворила!