Indeed the source of inspiration for the title. As can be seen on the final page of the chapter, with the Discord info, a suggestion to switch to "Cursed Whisper" for the title, which would also have been fitting since in this series love gets mistaken for "curse powers", got rejected in favor of this title.
Yeah, it's nice to see supporting/side characters gradually becoming part of the story too. And not just romantically, but also in other ways, like how the girl with the freckles (Inada) got pulled out of her somewhat self chosen isolation