Island in a Puddle

Due to their mother's frequent absence, 11-year-old elementary school student Minato Myoujin and his younger sister, Nagisa, are often left alone in their apartment. The only company that keeps the young siblings optimistic is their neighbor, Futaba Tachibana, and the local shrine's puppy, Zarame. Even with their mother's sporadic presence in their lives, Minato knows that she always eventually comes back home. After an unusually long absence, Minato's mother returns just in time for Nagisa's birthday. To celebrate the occasion, the three go to the amusement park. However, what should have been a joyful family outing takes a sudden turn when an unexpected incident occurs. When he regains consciousness, Minato finds himself in a completely unfamiliar situation, separated from everything he knows. Now facing circumstances beyond his understanding, Minato must navigate a dangerous new reality while trying to find his way back to protect his sister.