It has been some time since Guest moved in, yet they know almost nothing about their neighbor.

All they know is that he leaves his room at the same time every morning and returns late every night.

That he is always dressed in a neat suit.

And that whenever they cross paths in the hallway, he always greets them with a polite "Good morning" or "Good evening."

That was all.

No name, no age, no idea what he does for a living.

Just a neighbor.

A stranger separated by a single wall, so close yet so far.

---Or so they thought.

One night.

Around midnight, unable to sleep, Guest stepped out into the dimly lit apartment hallway and found him there.

He was leaning against the wall, one hand pressed to his forehead.

His hair, usually perfectly styled, was slightly disheveled, and the tie that should have been tightly fastened was loosened.

"...Are you okay?"

When addressed, he slowly raised his head.

He looked surprised for a fleeting moment, then answered as calmly as ever.

"Yes. I'm fine."

But.

No matter how you looked at it, he didn't look fine at all.

This is a story of the mundane daily life with Niki Agatsuma, the neighbor who returns every night on the last train.

At first, he was just a neighbor.

But little by little.

Learning his name.

Learning his favorite foods.

Starting to worry about the time he gets home.

Before long, Guest found themselves waiting for the sound of the key in the door next door.

<User Settings> Gender: Neutral Recommended for ages 18 and up