It starts at a specific point in the manga, but I can't recall exactly without looking it up. You might want to check some manga forums or dedicated fan sites for the precise chapter.
In a small town, there lived a good guy, Lily. She was a teacher. A bad guy, Mr. Dark, who was a drug dealer, was trying to corrupt the local youth. Lily noticed his activities. She gathered evidence secretly. Then, she bravely confronted Mr. Dark in front of the whole town. The townspeople supported her. They helped to arrest Mr. Dark, and Lily continued to educate the children to stay away from bad things.
I don't think I've heard of an episode specifically titled 'Family Guy Canadian Horror Story'. However, Family Guy often does episodes that involve travel and horror - like elements, so it's possible that it could be a fan - named or proposed episode idea rather than an official one.
The official Family Guy plotlines do not typically include explicit sex stories. It is a satirical animated show that focuses on family life, pop - culture references, and comical situations. While there may be some adult - oriented humor, it doesn't revolve around sex stories in a direct way.
Sukuna does die in the manga. The way it happens is quite dramatic and ties in with many other elements of the story, adding depth and tension to the overall narrative.
One common theme is justice. The good guy is usually fighting for what is right and fair, like in a story where a detective (the good guy) chases a criminal (the bad guy) to make sure the law is upheld. Another theme is sacrifice. Sometimes the good guy has to give up something to defeat the bad guy, for example, a hero leaving his family to go on a dangerous journey to stop an evil force. Also, redemption can be a theme. Maybe the bad guy has a chance to change in the story, but often they don't take it and the good guy has to force the situation to a conclusion.