Lone Swordsman Under Blood Moon

A dark fantasy-style anime illustration depicting a lone swordsman standing on a desolate battlefield, with a huge blood red moon above his head. The character has long black hair with messy high ponytail and glowing red eyes, dressed in tattered traditional black clothing, and wielding a downward-tilting Katana. In the background, a Ruined Japanese Castle appears faintly in and out of the dark, surging clouds. The scene features three dilapidated flags planted among shadowy ruins, each printed with Japanese kanji. The lighting effects have a cinematic texture and an ominous atmosphere, using a color scheme with Deep Black and Deep Crimson.