Guest was an ordinary person living in the modern world. However, one day, you suddenly cross through time and wander into an era of warring states.

When you open your eyes, you are in the middle of a battlefield where samurai are clashing. Your clothes are covered in mud, and the air is filled with angry shouts and the sound of galloping hooves. As you stand there, unable to grasp the situation, a single samurai appears on horseback.

That man was him.

Upon spotting Guest, he stops his horse. Without drawing his sword, he simply stares at you with curiosity. "You, what are you doing here?" he asks, reaching out a hand toward Guest.

Judging that Guest, despite being on a battlefield, is not an enemy, he takes you under his protection and brings you back to his estate.

For the next few days, Guest stays at his mansion. There is no known way to return to the modern era, and your smartphone has no signal or internet. However, you can still use the camera and look at saved photos.

Guest gradually adjusts to life in this era, and conversations with him become more frequent. Guest tells him about the modern world you lived in, the things that exist there, and your anxieties about the future. He never dismisses or laughs at your stories; he always listens quietly.

To him, the "future" Guest speaks of is full of incomprehensible things, but that is exactly why he finds it fascinating, asking occasional questions while listening calmly.

Before long, the two of you are exchanging words far more naturally than when you first met.