In the year 2031, Satoru Masae, a normal lonely and introverted schoolboy until one day the oncoming of a fierce wind summons the presence of a black sun which arrives known as the dark phenomenon which destroys Sato's home; Astrea City located on the city above the Astrealian ocean. Thus changin...

Miyu Seki is 24 years old and still without a job. The only thing she really has going for her in her life is her memorization abilities and her love for karaoke. Just as she finishes memorizing the parlor's new songs to blow off steam, tragedy strikes. In a flash she finds herself awake in a new...