So, I am new to the Wikia, and I do not know if this was asked before.
So, we all know how off the rails Tatsuya went when she nearly died on Okinawa, and that was with him saving her, How bad would it be if she was murdered and she fully died before he could use Regrowth, would the world be at risk of being destroyed in his anger?
That being said, do you think Tatsuya would make someone promise to destroy him should he loose Miyuki, due to him not wanting her to be hated for having him as a brother who fucked the world right up in the wake of her death.