Haru Estia

Haru Estia is a SoulWorker and the current leader of the Starry Forest League's Western Cloudream SoulWorker Unit. She was formerly a completed SinWorker and the leader of the SinWorkers that ravaged the inhabitants of the Great Void. She was regarded as the most dangerous SinWorker. At current moment, she is currently active with aiding the Western Forces against Kant and the Firestream Battalion.

(Source: SoulWorker Wiki)