HP: Harley and the Magic Cottage

Harry becomes Harley + transformation + one into three + the magical world brought about by new abilities + a star-like inner sea setting + mirror space battle (laughing) + (in some future stages) magical animals (including humanoid creatures) beautification pack + Luna heroine + additional packs for special magical animals such as the Snorlax. The soul of the time traveler accidentally came to a world where the child who survived was a girl. The world line also changed due to unknown reasons. The girl who survived was prepared to die due to unforgivable power. Intuitive guidance allowed the time traveler's soul to hold Snape's wand, and then the unknown magical power reaction turned the original one child into three. So Harry Potter became Harry Potter, Harvey Potter and Hayley Potter. The eldest sister Harvey is extremely intelligent, and her interest can surpass her genius. The second sister, Haili, is so powerful that she can only be described as a super sports student. The youngest Harley is a time traveler and has a magic cabin that can be entered no matter where she is. Unlike in the past, the children who survived received the admission notice from the Magic World Academy. No one knew what kind of shocking changes they would bring to the magic world.