My little focus and hc on Ran’s necklace we see in that small flashback in Tenjiku Arc. I want it to be something he keeps over the course of his life.  Maybe it’s something Rindo gave him or a trophy of the brother’s very first victory. And Rin probably asks him why he doesn’t “get rid off this ugly thing” but Ran simply smiles and keeps wearing it.  I think i just love useless looking items that don’t serve the narrative in any way but are little easter eggs that help us better understand a character's personality or imagine a part of their story (hence the fact that I loooove the plans of the bedrooms that we see in the character books), especially on under develop chara like the s62 boiz. 

So here are 3 little headshot sketches of 13, 18/20 and 30 Ran.