Man Vs Monster by Mikael Morath

Your name is Frank Johnstonberg. You are a retired agent/top scientist for the Monster Society, a society dedicated to protecting the world from monsters. After your family were killed during a attack by a monster called King Ghidorah, you swore revenge against monsters and wanted to iradicate all monsters. You retired a month ago after twenty years of hard work. But when a monster designated Godzilla attacks the city, it is your job to save it.