Thanks for this chapter. The author may assume that Archer will save Luca when she is a child. You can build a plot in which Archer will save Luka, it will be a reflection of Emiya Kiritsugu, who will save Shiro. Luca will want to be a hero like Archer. And Luka is very similar to Olga, (Olga-mom and Archer-dad, pale Celestine). And also please add a Mystiore Arte.