About someone called "Byakuya Kuchiki" who is irresponsibly arrogant.
You're an arrogant prick who thinks something called "pride" as your reason of living. Well let me tell you something. You're mistaken. The so-called pride is yours is nothing more than an excuse for hiding. Hiding from things you don't like. Yes your immortal beloved is NOT IMMORTAL AND DEAD. (although she was already dead but ehh.. whatever..) and you probably don't think anything about her anymore but since she was the only thing in your life apart from that "kuchiki clans pride business" The only thing you, yourself own apart from what The kuchiki clan owns.
She was what was yours,only yours. And THATS the reason you still treasure her.