Halloween - Oregairu

Having been notified about the death of his entire family due to a fatal car crash, Hachiman Hikigaya goes through a silent meltdown.

And it worsens.

It was only the beginning of his suffering.

A few weeks into October, he has progressed to any sort of recovery, still in a silent state.

His friends gradually moved on from him. He has been distancing himself from them, and from school. All of a sudden, Yukino Yukinoshita enters his house with a spare key to let him know that she would be engaged to Hayato Hayama.

On the outside, it may not looked like it affected him. His emotionless face, the stillness of his body sitting in the chair.

But she failed to realize that Hachiman broke even more. Losing his his entire family, and now losing to the one person he hated the most and having known his crush would be with someone else. Having no power to prevent it.

He was already at the bottomless pits of hell.

October 31st, 2018: a graduation party takes place in Sobu High School.

As he stared at the window inside his room, he noticed Komachi's old boyfriend, Taishi, and another person outside the front yard. And after heading the contents of their conversation.

Hell decided to return Hachiman Hikigaya back to the living world, with a gift. But it really wasn't a gift.

It brought itself to him.