Love Unseen Beneath the Clear Night Sky

After performing a song at her school’s opening ceremony, musician Yori Asanagi receives an apparent love confession from freshman Himari Kino. But just as Yori decides she wants to return Himari’s feelings, Himari reveals that she did not “love” her, but “admires” her! But you can’t unring a bell once struck, and Yori is determined to make Himari fall for her, not just her music. Will their hearts ever beat as one, or will their love fall out of tune?

The story centers on two Tokyo high schoolers who connect over a painting of fireworks. They trace the painting to the Nagaoka Fireworks Festival in Niigata, one of Japan's three major fireworks festivals, and to a mysterious promise that connects the two to the past.

Koyomi Hidaka and Shiori Sato meet at his father’s research center and begin to fall in love, but so do their parents, who eventually marry. To avoid becoming stepsiblings, they decide to run away to a parallel universe. Traveling between dimensions is common in their world, but not without repercussions. Does a universe exist for the young couple, and what will it cost them to find it?

The story centers on a boy named Kazuki Tsukigase, who transfers to a high school on a remote island to get away from anyone who knows him. Kazuki finds out that there is an inlet on the island where people are rumored to disappear. Exploring the inlet, he encounters an unconscious girl. When she comes to after Kazuki takes her to the clinic, she is unable to give out anything about her identity except that she is named Nao, is 16 years old, and whispers the year "1974."