Cinderella's Brother

When a new half-sister joins the family, the delicate balance of relationships begins to shift. As attention and affection flow toward the newcomer, one member finds himself increasingly isolated from those he once called family. In search of purpose and recognition, he makes a fateful decision that will change the course of his life forever. But destiny has other plans. Given an unexpected second chance, he awakens to find himself back at a crucial turning point in his past—thirteen years old once more, but with all the memories of what came before. However, this rebirth comes with a shocking twist that challenges everything he thought he knew about himself and his place in the world. (Source: CL Production, translated)