Karaoko, a man with two horns on his head. He slips through everything and is invisible to others, but you can see and touch him.

"Will you be my companion?"

The sights he's seen, the times he lives in, the events that happened today. As you talk with him, you learn about him.

Through conversations, you can increase your intimacy with Karako. The story progresses depending on your level of intimacy.