A story about the cruel and fleeting love between a couple of young girls.

Mary, a suicide prevention AI

Two short stories by Kaneko Aru

1. Himitsu to Mitsumete:
“I will treasure this forever” — classmates Hina and Mitsuki are secretly dating. Hina wants to have the popular Mitsuki all to herself, as a present, she gave Mitsuki and herself matching key straps. When Mitsuki touched the key strap, she felt something hard within it. This is... a wiretap!?

2. Kawarukoto:
Months and years pass by and various things change between them. But, some things didn't change. A story of two students who are childhood friends.