I'd be happy to help translate Japanese text to English, but I don't see any Japanese text in your message. You've written "Theater" which appears to be English already. Could you please provide the Japanese text you'd like me to translate?

A man named Abel, an actor, came to a small theater. Abel was a talented man who had risen through the industry solely on his acting skills, but in reality, there was the shadow of a demon behind him, and his brilliant acting was the result of a contract with the demon. The shadow of a demon was also creeping up behind Louis, who had entered the industry inspired by such an Abel.