YA(?) Circa 2010. it is about a girl that trying to bring back her brother (or sister)'s spirit because her sibling is crossing a sacred bridge. The other side of the bridge is the spirit world. Her sibling's soul is trapped inside it.

[Monique]

Hey, I'm trying to find a Japanese novel that I forgot the title and the author.. it is about a girl that trying to bring back her brother (or sister)'s spirit because her sibling is crossing a sacred bridge where the other side of the bridge is the spirit world so her sibling's soul is trapped inside it.. anyone read this book? I'm trying google it but nothing matches.

It isn't Spirited Away.

[Tab]

Little Sister ?

Do you remember the cover?
Part of a series?
Time period story takes place?
Was the author Japanese?