I wonder what happen to the previous miss sunflower?
She passes away from whatever she is ill with presumably. In chapter 7 miss sunflowers brother says miss sunflower (the current one) was with the previous owner in their final moments.
That sempai is the photo store girl from chapter 4, isn't she
Yup - a blonde camera woman - in ch4 she dosnt just own a photography book store but has a camera and is taking shots so I'd say its her for sure.
I thought we had to get a flashback section- the previous miss sunflower is such an important past - is why the current one owns the store, has that name, likes books etc- that the story couldnt realy be complete without showing us some of what transpired back then.
I'm really curious if miss sunflower loved the previous owner and looked up to her purely platonicaly or had romantic feelings for her - kinda mirroring the modern day, with her in Matsuri's role? Either way they must have got very close- you don't have someone you dont love in some form with you when you die, or give them your shop.