For the two weeks leading up to the start of the Tournament of Legends, Luke used whole days just training. This would be the most important competition of his entire life up to that point, and he wanted to live up to the expectations Ayumi had placed on him.
This championship would bring together young people from all over the Broteforge Empire, from respected students of Maxia Academy to future candidates for renowned Clan leaders. Everyone would be keeping a watchful eye on the Tournament of Legends, and the hope was that the First Servant, or at least some of his subordinates, would too.
For that reason, Luke spared no effort in preparation. He assimilated the <Sirkelig> skill without fear this time and also ingested the Monster Core of the last Shadow Ninja he killed in the hospital. By ingesting the small black orb, he learned the skill <Invisible Trail>.