On a certain rainy day, highschooler Izumi Kotori jumps into a rain puddle, which turns out to be connected to another world. Can she resolve the ongoing conflict that involves rain?
Nagisa Ootsuki shed her former self out of shame from failing her highschool entrance exams. On her first day in her new highschool, who does she meet but the girl who made her fail the exam! How does Nagisa deal with these complicated emotions?[hr]
Aizawa Haruki, 16 years old, is in his 2nd year of high school, and likes to live efficiently. One day during summer vacation, a girl, Aizawa Himari, suddenly appears, calling him 'Onii-chan' and claiming that she's his little sister. As it turns out, Haruki's father recently remarried, and his new wife brought a daughter with her. However, since both of their parents are overseas, it'll only be the two of them living under the same roof. And for some reason, Himari seems very obstinate about spending as much time with Haruki as she can.