Umi no Canaria

is a Japanese light novel series written by Hitoma Iruma, with illustrations by Tsukugu. The series began publication on September 10, 2019 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Jogasaki, a 5th grade girl who lives in the neighborhood, is a girl who invites her to go to the sea to see whales from the morning. As she told me, I was in high school 2 heading to the sea together. I don't think 11 and 17 years old, romance. The usual summer Wednesday we spend together. I wish these calm days would continue forever.

When I wake up on a summer morning, I organize information in front of the mirror as usual. "Yuki Umino, 17 years old, female gender, 2nd grade C group, parents are alive ──" I brushed my hair on my face and switched to me. Check the day of the week and it's Wednesday. Well, let's do our best for about three days this time as well.

And Mr. Jogasaki declares. "I want to destroy this world."

In a closed seaside town, I and she meet today.