This book is also known as The Pet Girl of Kikuya, A Brutal Love Triangle Between the Girl Who Dropped from the Sky, My Fiancée, and My Adopted Little Sister, It Was Me First! Cooking and Love, Too (Gets Knocked Flying), and Just How Many Lovely Little Sisters Do You Have?
After transmigrating into the world of Food Wars!, the protagonist finds out he used to be a dropout from Totsuki Academy. What should he do?
No problem, he has the God of Cooking System to back him up. Starting out as a roadside food stall owner, he makes delicious dishes, takes on master chefs, and gradually grows into one of the world's top chefs.
But wait, the Special Chef Examination? The Spirit Repository? The Greedy Wolf Pot? The Dark Cuisine World? A descendant of the Liu family? An heir to the Seven Star Knife?
Coach, why is the plot going in such a weird direction?! (╯‵□′)╯︵┻━┻