What do you think Sesshoumaru's toxic trait is?

seen from United Kingdom
seen from United States

seen from Canada
seen from United States

seen from China

seen from United States
seen from United Kingdom

seen from Romania

seen from United States
seen from Israel

seen from United Kingdom

seen from United States
seen from United Kingdom

seen from United Kingdom

seen from Sweden

seen from Czechia
seen from United Kingdom
seen from United States
seen from Germany

seen from United States
What do you think Sesshoumaru's toxic trait is?
Question :)
Do you guys think it would've been nice if Inuyasha's and Sesshoumaru's story had been different? I just saw a picture (which I reblogged) where Inuyasha is an infant and Sesshoumaru is hugging him while he sleeps, and I just thought what about if their story was different? I had this thought that when their father died, Inuyasha's mother died and Sesshoumaru's mother disappeared, they stayed together and cared for each other. (Mostly Sesshoumaru b/c he was the big brother.) That even though Sesshoumaru was jealous of him and didn't love him crazily he still cared for him and took care of him as he grew. Then later on when Inuyasha grew older he left him and fought for some reason and then hated each other. Hahaha I know its a dumb idea, and I still think the way the story really is is better; but I just thought about it. Have you guys ever though about it? What do you think could be another background story for this two characters? :)