User blog comment:Omega natsu2/Chapter 387: Tartarus Arc, Part 4: Father and Son, Predictions./@comment-121.54.54.35-20140602022846

I don't know if somebody made mention of this yet but I think that Deliora was the demon Silver always wanted to slay. After all, Silver is a demon slayer. During the Sun Village Arc, if you remember the part where the team was talking to Atlas Flame (ch 353), Atlas Flame said Silver mistook him for a demon and so the entire village was frozen. On the last pages of the chapter, we see Silver in front of a grave. It could probably be for Ul without the actual body of course - since she became part of the sea :). To connect the dots, Silver is mad because he failed to slay Deliora. Assuming Ul is Silver's wife, he probably regretted the fact Ul made herself use Iced Shell. Maybe Silver has high expectations of Gray that Gray could have been manlier that time and save Ul; or he just really love Ul; or maybe he don't even know of Gray as his son, but the fact Gray was there, left an impression to Silver. That could also be the reason why Silver despise hearing the word aka name Gray. Silver may also have failed to update himself of the Galuna incident and still searching for Deliora ( I know it's ridiculous >.>) thus adding to the whole "Gray is reminded of the Galuna incident during the start of Sun Village Arc thing". But since Silver is after all a Demon Slayer, this may not entirely be true. Pardon if my theory has flaws and I don't need to be posted in the template above but I would leave my anon user identity. \(Anon)/