My plot hypothesis : They are actually twins but one died letting the other alone, so he developed slit personality and act like his dead twin ╮( ̄▽ ̄)╭
Ooh shhi you might be on yo something
It reminds me of Sukuna.
Is it rlly necessary to kiss his imaginary twin...
Lol, it sounds so funny now.
My plot hypothesis :
They are actually twins but one died letting the other alone, so he developed slit personality and act like his dead twin ╮( ̄▽ ̄)╭