Mattsu, Yamma and Moburi - The Naval Treasure and Riddle Island

The Chuo Line, a cursed line where accidents and suicides often occur. The story centers on a couple who both live along the Chuo Line. When they try to meet accidents occur as if some force is at work. Why can't the two meet anymore, and what is the power lurking in the central line that prevents them?

Three aspiring young Japanese models are on their very first fashion shoot at an abandoned school one hot summer day. Without warning, strange events begin occurring around the set that causes the models and photo crew to question their sanity, as one by one they begin to die agonizing and painful deaths that are seemingly caused by none other than themselves.

The story centers on a high school girl named Tamahi, who encounters strange creatures while navigating a gigantic apartment building.

A young woman in a decaying apartment complex finds herself seeing worms and moths everywhere, bursting out of beetles, animals, and people, and sets out to find how this is related to a rash of murders across the city.

College student Rin and high-school student Tamahi investigate the secrets hidden in a vintage apartment building that has been the subject of rumors of psychic phenomena and strange deaths.

Mattsu and Yamma are two boys who live in Matsuyama. Their favourite pastime is looking for "the seven wonders of Matsuyama". One day, two men appear. What are the 7 hidden gems that they seek? Moburi, a high school girl who is like an older sister to the boys, also gets caught up in the adventure as this thriling story set in Matsuyama begins. Faced with all kinds of trouble, what will they choose for the future of their city?

"Calabi-Yau" refers to the "six-dimensional world" (Calabi-Yau manifold) that humans cannot perceive.