A Twenty-Year-Old Rich Woman Ordered a Bar for Me

Male college students drink away their sorrows in bars every day. The childhood sweetheart is so beautiful that because of the protagonist's casual mention of wanting to start a business, he bought three restaurants including a bar. The protagonist's mentality gradually changed while running a store and solving emotional problems. For the first time, he showed his cold-bloodedness and cruelty. Later, he discovered that the world was not simple... Global cataclysm, various monster races appear out of thin air, and there are even alien races that have been hidden for a long time and want to take advantage of the chaos to seize this world. Human beings pinned their hopes on the protagonist, only to discover that he is the most ferocious monster...