Arashi no Hana Murakumo no Uta

Arashi no Hana Murakumo no Uta (嵐ノ花 叢ノ歌) is a manga series by Keita Saiki. It was serialized in Comic Ryu.

Plot
Alternative reality of Manchukuo filled with military disputes and dangerous mystical beings, where humans and monsters fight each other. In the year 1932 a little boy survives a horrible train crash. Seven years later in Harbin city, he meets a beautiful and mysterious gypsy girl from an ancient Clan of Shinnou. This destined meeting is only the beginning of a larger story that like a spider's web gets everyone caught in the chaos of the upcoming war.