As the title states, among billions of different worlds, there will always be one Kaneki-kun who stands out...
"I'm not the protagonist of any novel...
Just a very ordinary college student who can be seen everywhere and likes to read...
But…
If you were to write a work with me as the protagonist...
That must be...
'Tragedy'
But... Even if it is a 'tragedy', I will never leave him (let him leave), absolutely! "
Let him leave (strongly possessive) Leave him (strongly dependent)