Twelve-year-old Koichi, who has been separated from his brother Ryunosuke due to his parents' divorce, hears a rumor that the new bullet trains will precipitate a wish-granting miracle when they pass each other at top speed.
After the death of their estranged father, 3 adult sisters invite their teenaged half-sister to live with them.
Keisuke Isobe and Koume Satou live a rather dull life. But when Koume's crush breaks her heart, their situation becomes quite unordinary. She starts a "no-strings-attached" relationship with Keisuke, whom she had previously rejected, both finding solace in the other in order to fill the emotional voids in their lives.
