Iiki no Ki

During the age of romanticism in Japan, the capital was leveled to the ground by a powerful earthquake. One of the many orphans it left was Sorato, who was taken in by Baron Kamichika. In his new home, the "Blood Blossom" Estate, Sorato meets the baron's heir, Garan, and his fiancee, Kiyora, and the three swear their eternal friendship. But that promise is soon showered in blood because of secrets and desires nobody could have ever imagined to exist...

(Source: Aerandria)

Iiki no Ki has been published in English as Demon From Afar by Yen Press from December 16, 2014 to March 22, 2016. Two volumes were also published in Italian by GP Manga from December 15, 2012 to January 31, 2013 before release was discontinued.