Wave, Listen to Me! Vol. 9 (Kodansha, 2022)

Overcoming a late-fall earthquake and other trials, Minare Koda has exhibited steady growth in her skills as a radio host. But on the eve of Valentine Radio, the biggest talk radio event in Hokkaido, yet another curve ball is thrown her way. Assistant director, Mizuho, has been kidnapped by the scattered members of the School of Wave Wisdom, and now it's up to Minare and Chishiro to rescue her.