The forest of ghosts and bones - Lisa Lueddecke

This gorgeously evocative standalone fantasy from Lisa
Lueddecke is inspired by the Hungarian myths of her childhood.

Enter a world with a haunted castle, a dark and dangerous
forest and poisoned rain, with two fiery protagonists to root
for - a book perfect for fans of Naomi Novik and Laini Taylor.

You are the girl who can walk in the rain, and I am the boy
who knows the way.

The Eve of Saints approaches and the poison rain which shrouds
Castle Marcosza strains at its boundaries. When Beata's brother
is taken by the rain, Beata and her friend Benedek must make a perilous
journey of discovery to uncover the root of her secret - why
she is the only person who can walk through the rain unscathed.

But Beata is soon caught up in a game of cat-and-mouse with mysterious
Liljana, a girl with hidden powers of her own. And with
magic outlawed in Marcosza, can the pair find a way to work together
to harness their forbidden ability and unleash its full potential?
Or will they find themselves seduced by power and all that
it offers...