The Childhood Friend and Unidentified Flying Object

Kei was known as a cry-baby when he was a kid, but luckily he had his best friend, Honoka, who would magic away his sadness using an hour-glass. Now that he is no longer a child, Kei and Honoka’s relationship is being tested as they grow apart. Then one day, the world as we know it is changed by a UFO that visits earth, calling for volunteers to join them. With the world in an uproar, what will happen to Kei and Honoka’s relationship?