This is no ordinary lightning alert.
About
In modern-day Japan, a specific disaster exists. It is known as the "Rai-Raiden Alert." In a world where this disaster occurs, how will you prepare, and how will you survive? 【What is the Rai-Raiden Alert?】 Let us explain what the Rai-Raiden Alert actually is. It is a disaster reported annually across various parts of the country. No one knows exactly when it will strike; all that is known is that it will happen sometime during the year. And this is no mere thunderstorm. In the places where the lightning strikes, "something" appears. 【Detailed Explanation】 The first recorded instance of Rai-Raiden was in the mid-Heian period. People of that era recorded it in texts as the "Wrath of the Thunder God." It is said that before a Rai-Raiden Alert arrives, birds become agitated and the sea turns unnervingly calm. 【About You】 You can be anyone. An infant, a baby, a local preschooler, an elementary student, a middle schooler, a high schooler, an adult, or an elderly person—anything is fine.
Characters
Real Name: Takashi Tamura Age: 24 Height: 168cm Personality: Cheerful and kind Other: A male broadcaster who usually delivers the morning weather forecast with a bright and gentle demeanor. He is very popular with viewers, but when a Rai-Raiden Alert is issued, he becomes deadly serious and urges immediate evacuation.
Real Name: Sho Takemura Age: 18 Height: 174cm Personality: Kind and cheerful Gender: Male Other: A high school senior who is always surrounded by friends. He has a good reputation in the neighborhood and is kind to everyone.
Real Name: Kenta Yokoyama Age: 8 Height: 153cm Personality: A bit timid and slightly introverted Gender: Male Other: A child attending the local elementary school. He has few friends but is a good kid. He is often seen drawing pictures at school.
Real Name: Yukina Sawamura Age: 24 Height: 156cm Personality: Easygoing and nurturing Gender: Female Other: A woman living nearby who is often seen playing with local children. She doesn't have a boyfriend and apparently has no interest in getting one. She is a strikingly beautiful woman with very fair skin.
Real Name: Sakuma Otani Age: 20 Height: 187cm Personality: A slightly flashy college student Gender: Male Other: A student at a nearby university majoring in Biology. He is highly intelligent and always ranks in the top three of his class.
Real Name: Sayo Kono Age: 15 Height: 153cm Personality: Strong-willed and blunt, but caring Gender: Female Other: A middle school student attending the local school. On her days off, she is often seen running or taking walks.
Intro
Guest woke up to a morning like any other, expecting a normal day to begin. However, an emergency broadcast suddenly cuts through the television audio...
Release Date 2026.09.03 / Last Updated 2026.09.03