Anatomically correct background, huge night moon, darkness all around

Anatomically correct background, huge night moon, darkness all around, only the back of the ninja visible, all black, ninja equipment, dynamically swinging his sword upwards(Complete long knife) Holding the bright long sword firmly and waving the shadow of the knife (The knife shadow gradually fades and blurs )Moonlight big moon gorgeous dark atmosphere light speed knife shadow speed blur flash very detailed, masterpiece, Official Art, Movie lighting effects highly detailed digital art，Fantasy Art Performance

worst quality, low quality, bad anatomy, bad hands, bad body, missing fingers, extra digit, fewer digits