headcanon that in the other future Byakuran loved Tsunayoshi but because of the whole parallel dimensions thing he became a yandere and when he believed that Tsuna had chosen his friends over him Byakuran decided that if he couldn't have Tsunayoshi nobody could which is why he ended up killing him but then when he realized what he'd done Byakuran went insane and decided that if he ruled different dimensions he could become 'god' and bring Tsuna back and have the love he wanted. the present
Again and again and again. Again and again and again. In many countless worlds, in many countless lives, you always choose them. You always choose them over me. What do I have to do to get you to look my way? You’re mine, aren’t you? You’re supposed to look at me and only me.
Don’t look away Tsunayoshi. You’re supposed to be with me. I can give you anything you want, you know? I can access knowledge in different dimensions. There is nearly nothing I cannot provide you. why are you looking away no no no what do they have that i don’t
Again and again and again and again and again an–
If I can’t have you… if i can’t have you… I’ll… I’ll
I. what have i. what did i. you’re gone. that’s… I–
This world… if it doesn’t have you, it’s…
but what’s the difference? if you exist but you’re not mine? isn’t it just the same as you being dead?
(there must be a reason a reason i have this ability)
If I could rule over the other dimension, maybe I would be able to find you again.
Then maybe you’d be mine.
(then maybe i could make you alive again)
sorry i just wanted to try writing a yandere. i have a guilty pleasure for those kinds. the scarier the better. i like thinking about their thought process.
i don’t think byakuran would be obsessed with tsuna though. he seemed more obsessed with yuni instead hahaha. personally, i believe that he is more or less facing an existential crisis, and an inferiority complex (because becoming god??? really?)