For Chino Kafu Li Yalin is his brother, she will never deny this. As the only child in the family before crossing, he always wanted to have a younger sister, a lovely younger sister or something, wasn't she the best? It is a pity that the wish is only a wish after all, and it is impossible to realize. So, crossing into the present world, having such a lovely and smart sister. Chino Kafu, this is simply the rhythm of this life without regrets!