'Your smile is the best reward,' the young chef strives to give each customer their own 'happiness.' Through his efforts, countless guests gather: Rai and Mei, Artoria and Kanna, Kiritsugu Emiya and Archer, the Sun Knights and the Azure Stars, Daigo and Shotaro… Countless guests from different worlds meet here. The clash of ideas changes countless destinies, and the young chef gradually matures amidst this intellectual exchange. Meanwhile, at the boundary between life and death, a man like the sun repeatedly uses his cooking to help guests on the verge of eternal sleep regain hope. Even with his hands covered in wounds, he still struggles to uphold the burden of life. This is a story about how cooking changes destinies—

Awkward, friendless, and without a girlfriend, the protagonist, Hachiman, complains to his classmates who celebrate youth, "They're all liars, they're all lying, just explode already!" His future dream is to "not work"—this is the love story of a high school student who, under the guidance of his homeroom teacher, is taken to the "Service Club" to the school's most beautiful girl, Yukino. An unexpected encounter with the beautiful girl...it sounds like the beginning of a romance story, right?! But Yukino simply can't forgive Hachiman's regrettable and terrible personality! A recurring cycle of problematic youth—what happened to my youth?!