I watched an anime years ago and can‘t find it anymore. All I remember is that the main character had a sword that could transform him into a knight with blue armor. The side character had two guns that also transformed her. The guns are a demon or evil being that draws on her blood (I am not exactly sure about the blood). In the end he had to fight against his own sister to save her. She transformed into a huge blob like monster.
Some more info (sadly I have no more detailed information)
- What type of anime was it?
I think it was just 12 episodes long, but I have no idea what type it was exactly. - What was the animation style?
The style was definitely more Japanese. - Where did you watch it?
I watched it on YouTube. - What was the year of production?
I honestly don‘t know, I think the style was more of a modern one. - What's the genre?
Fantasy, Swords, weapons (guns, etc.), a bit of romance - Setting
It was more futuristic and in a country somewhat like Japan.
Does anyone know which anime this is?