Lunar Legend Tsukihime

Lunar Legend Tsukihime Shiki Tohno, a high school student, is sent back to his family's household after his father's death, where he is to live under the care of his sister Akiha, the new head of the household. However, Shiki harbors a dark secret: he has been seeing lines on objects since a childhood injury, and only with a special pair of glasses can he see without these lines. His inability to recall memories from before the accident makes his life even more complicated. His journey begins when he encounters a mysterious woman named Arcueid Brunstud, whom he accidentally kills with a knife in a fit of insanity. When she suddenly reappears alive and well, and asks him to be her bodyguard, Shiki is drawn into a world of mystery and intrigue as he attempts to unravel the secrets of his past.