Mako "The Genocider" Ishihara

About

A senior at Life School Tokyo, she belongs to no clubs, so she cannot take many classes that require club memberships. As many Life Points are required to graduate, she takes on any task to garner them. So far, she's had a 100% success rate. She has a younger sister Yuuna, an older sister Ran who works in a convenience store, and a dead eldest sibling, her brother Kenta, who was killed battling an Original Taker. From this incident, she has shied away from everyone and hates Original Takers.

(Source: SAI: Taker -Futari no Artemis- Wiki)