Video artist Ryosuke visits the suburb of Furano in Hokkaido, tuikan.cc where his friend lives, in order to shoot a video. His car breaks down and Ryosuke decides to walk to a house and ask for a phone. The person that opens the door is his former girlfriend and first love Haruka. They meet for the first time in 23 years. Even though Ryosuke knows that she is married, he takes her to his video shooting and they get close. Ryosuke leaves Hokkaido in 2 days and he asks Haruka to spend one more day with him.
长久以来，五个世界相互制约抗衡，形成了微妙的平衡，然而一场意外的发生让这五个世界都将面临着同一个结局——毁灭。 为了避免这恐怖的未来图景成为现实，拥有“Excceed能力”的少女们挺身而出，她们被送往名为青兰学院的学校之中，在这里接受训练和保护。率真耿直的彩城天音（田村由加莉 配音）、沉默寡言的苍月纱夜（寿美菜子 配音）、优雅高贵的阿尔玛利亚（原由实 配音），在校园里，这些命运相似的少女们相遇了。
