On a summer afternoon under the blazing sun, Aki, a boy who’s often bullied, decides to confess his feelings to his childhood friend, Yui. However, on their way home, Yui suddenly disappears. Even though they...

Michiru Kita is a weak-spirited girl who has a hard time saying what’s on her mind. One day, she notices mysterious, ring-like markings around the necks of two of her classmates, Chika Akatsuki and Shito...