The male protagonist is a loyal dog, and he believes that one person is a lifelong matter. The heroine is boring and unsociable. When two people like this get together, they are completely determined to "win the heart of one person and stay together forever". It's probably just too plain and beautiful, and I'd be embarrassed if fate didn't add some "cumin" to it. Since we can't hold hands and grow old together, let's forget each other in the world. Forget each other? Is it really that easy?
Being together in peace is a blessing~