He is imprisoned somewhere and big brother is making uke forget about him we still don't know why Sang
I think the line he said before, "show me the pain my mother felt when she abandoned me" is a good indicator of where this is coming from. perhaps an inferiority complex with coro? a twisted desire to take what is his the same way whoevers coros father is took his mother away?
wait a damn minute it's been a while since I picked this up but remind me where's coro??? i mean i wanna backread but that's too hassle