That's the Protagonist! Don't Go Killing Him!

[No CP, unhinged antics, quick transmigration, ensemble cast, mental-illness fiction, grilled cold noodles, intestines, cheese] “...” “I'm filming an ad here! Behave yourselves!” “Stop! That's the male lead! Get that knife away from him!” “Quit slapping him! The protagonist's face is all swollen!” “You were hired to play the female supporting character, not to become the female lead's spouse!” “Heavenly thunder! Strike the top of his head! You fried him to a crisp! What are you even doing here?” Ahem. Are you still struggling to create a believable supporting character? Worried your characters aren't memorable enough? Join Butler Professional Supporting Character Services for a flawless protagonist experience, with complete, all-around support! “Wait, who invited this otherworldly evil spirit? Get it out of here...” Beep... Equipment severely damaged... Butler Professional Supporting Character Services looks forward to your visit. A 70% deposit is required and is nonrefundable, dear.