セブンス, Sevens, 7th

Lyle was born as the eldest son of a noble family in a world where swords and magic exist, worshiping goddesses. In the past, Lyle was hailed as a genius and a Kirin child and had high expectations, but he is treated coldly within the mansion by his sister Celeste, who does everything perfectly. As if he had thought of it, Celes suggested a fight with Lyle, and Lyle ended up confronting Celes. Lyle is tragically defeated by Celes, who is on top of everything else, and her heirship is taken away by Celes, and her very existence is lost. Lyle is hurt and disappointed, but he is rescued by an old man who lives in the mansion's garden and receives a necklace with a jewel on it. The old man had kept the blue ball from his predecessor, Lyle's grandfather, and the blue ball with the [Arts] recorded on it was something that could be called an heirloom of the Walt family. Lyle was entrusted with a jewel that recorded the arts of seven successive heads of the family, and left the mansion with it.