Chapter 3 - Page 18
The text is, like the previous page, Ayumi Ishida's "blue light Yokohama", a 60's song about... Love, i guess? I always liked it.
There's a scene in the manga Vulgar Ghost Daydream where the main character Misaki is seen singing this to herself. Every time i need a sort of sweet, sorta old-school song, i always use Blue Light Yokohama.