Alice in Murderland

Alice in Murderland (架刑のアリス, Kakei no Arisu) is a shojo manga by Kaori Yuki. It began its serialization in the Aria manga magazine January 2014. Yen Press has licensed it for English release.

Plot
The Kuonji clan, owner of one of the world's top conglomerates, has a tradition: Once a month, family members attend a "Mad Tea Party." But at the latest gathering, the nine Kuonji siblings in attendance are shocked to hear a pronouncement issue from the lips of their mother, Olga, asking that they all fight to the death! As chaos erupts, Stella, the fourth daughter, loses all reason, and suddenly a whole new Stella, complete with blonde hair and blue dress, comes out to play!