Chapter 0

Chapter 0 is the prologue chapter from the Koisuru Asteroid manga series.

Summary
Mira Konohata was dressing up in her high school uniform and looking in the mirror. Her bigger sister checked on her, seeing she was still awake, but Mira explained she was just too excited for the beginning of high school ceremony tomorrow and explained she tried the clothes 23 times already. Her sister told her to not stay late and if she nod during her speech tomorrow, she will forehead flick her, but Mira assured her it's fine and wanted to stay a bit more.

At the same time, Ao Manaka was preparing for the beginning of high school too. She then noticed the whale keyring she always wore in her previous school bag and moved it to the new bag, remembering her promise a girl.

During the school ceremony on the next day, Mira nodded off, missing her sisters speech and received a forehead flick from her. Another student Suzu approached her being happy that they will be together with Mira in the same class, but Mira was still sleepy and feeling the pain from the flick.