The midpoint afterward seems to indicate that this is the first budding stages of yuri, I really hope this gets a sequal.

Is there non-imagined yuri in this one? Could never get into it really.

Yes, though its a bit further in and is a side-couple.

おたんじょうびおめでとう, ara scans!

Geez, this is bad for my heart too. Thank you Yuri Project for the releases on these, Suga-sensei is pretty much vying for current favourite yuri mangaka at this point between this and First Love.