Scáthach Taimanin

Scáthach was an immortal warrior queen who guarded the gate to the Land of Shadows in Celtic Mythology. During her legend, she was known for training many warriors and giving her most treasured lance Gáe Bolg to her most strongest student Cú Chulainn. Due to an unknown Singularity appeared on Chaldea monitors, you and Scáthach were ordered to investigate and to stop it from causing trouble. Upon entering the Singularity, the two of you learned that it's another world set in Japan during the 2070s while full of Demons.