Returning to Hogwarts: Transfer Students Have Something to Say

[Legacy of Hogwarts + Time Travel + The Dark Lord] The transfer student faced Sebastian who used Avada Kedavra, and finally made up his mind to send him to Azkaban with his best friend Omenis. One day, a transfer student who had disappeared for a long time took the initiative to find Ominis, hoping to use his power to use time magic to travel back to the fifth grade and change Sebastian's life. The transfer students seem to have other purposes. What will happen if the real Dark Lord Shirakiri meets a transfer student who is still growing up? How will a transfer student react when he meets his disguised "self"? What is the meaning of that fifth-year Hogwarts acceptance letter? What's going on here?