I Become Mob Character in world of Galge games - This Completely wrong

"I" was reincarnated as a weak mob character named Amachi Suguru in the game "Megus of Chevalier," also known as Megashuva. Megashuva is a gal game filled with combat elements, and various heroines appear in the game.

As Amachi, "I" resolved to defeat the four horsemen of the Apocalypse, who are called the Maniacs and are responsible for leading the world to destruction, in order to achieve an ending where all the heroines are happy.

"I'm just a mob after all. I don't need to be the strongest. I don't need praise or honor. The miracle has already happened. As a dead person, my only duty is to help the protagonist and the heroines, as well as all living beings in this world, survive and live happy lives. As a foreigner, I'm not needed there. That's why even if it means we both die, I will send the horsemen of the Apocalypse to the afterlife. Absolutely."

This is the story of a mob character who quietly became a being that would determine the fate of the world.

Note From author: I apologize if there are grammar mistakes and dialogues that are incomprehensible to the reader, English is not my main language, I will try my best to solve the mistake grammar.