It's the start of the new year, and the long-awaited reunion between two siblings is finally here. Umi-chan, who has grown up over the years, returns home after a long time, only to find her older brother, "oniichan," still fast asleep. Her father, "oya-san," is delighted to see both of them again and calls for "oniichan" to wake up. As the siblings catch up, the familiar bond between them is rekindled, and the playful teasing begins. Umi-chan recalls how "oniichan" used to take her on adventures, from catching bugs to playing by the river—now, it seems, he's still the dependable, beloved older brother she always admired.
As the conversation continues, the mood shifts from nostalgic to intimate. Umi-chan takes the opportunity to tease "oniichan" further, drawing out his reactions with clever words and playful challenges. She watches as he becomes increasingly flustered, his body reacting to her teasing, revealing how much he's still the same "hijikata" he always was. The playful banter turns into a more sensual exchange, as Umi-chan takes the lead, testing his reactions and slowly drawing him deeper into the moment.
The atmosphere becomes more intense as Umi-chan continues to tease and challenge "oniichan," each move bringing them closer. The tension builds as she takes control, showing her confidence and desire to make him feel just as excited as she is. The familiar sibling bond evolves into something more passionate and intimate, filled with mutual affection and longing. The year has brought them back together, and now, they're ready to experience something new—something both of them have been waiting for.
