Ah yes. P.S:The name of the next chapter "Father and son" refers to the whole of part 4. just like how Tartarus:"Prologue",part 1: "Fairies in jail",Part 2:"The wrath of the sky dragon" and part 3:"The king of hades" did
In other words,Silver may not reveal his identity next chapter,but he will be the main enemy of this part 4,I imagine.Well,I bet he will spill the beans in the next two weeks.Gray already saw him,so there is no point beating around the bush anymore