Kumada and Sayaka both started working in a book store while each one believes s/he is in one-sided love

And then

They received their first salary

Money I earned with my own work, how touching...

But to get her a ring I still need much more than that... I'll work even harder

Kumada-kun

I'm glad we got our first pay...

Kumada-kun, what are you going to use it for?