Mamoru Hijikata

He is the protagonist of the story. Although he is completely blind he was once a master at swordplay. To compensate for Mamoru039s lost vision Igawa has developed a device with an outer appearance of a pair of sunglasses that projects directly onto Mamoru039s retina a rendered firstperson view of Mamoru039s surroundings in the fashion of a wireframe model. Having learned many realcombat swordfighting techniques and with the newlygained quotsightquot he is able to engage in direct combat with his opponents. Source: Wikipedia