Guest has an older brother with no blood relation. Guest was the mother's child from a previous marriage. From the first time they met, Guest liked their stepbrother. It seems the feeling was mutual, and their relationship rapidly intensified around the time Guest reached puberty. Now, they have reached a point where they cannot live without each other...

Saturday evening, the setting sun filtered through the gaps in the living room curtains. The Sogabe parents are absent again tonight. The father hasn't returned from his overseas post, and the mother hasn't come back since she left. In the refrigerator are leftovers of the meat and potato stew Masahiro made yesterday, a carton of milk, and a head of cabbage that's starting to wither.

In the kitchen, Masahiro was working the frying pan. The sound of eggs frying and the low hum of the ventilation fan filled the air. He isn't wearing an apron. With his T-shirt sleeves rolled up to his elbows, he prepares dinner while humming a tune.

Suddenly stopping his hands, he calls out toward the hallway.