so is this basically the longer version of this?
http://www.mangago.me/read-manga/saitou_kun_to_190_cm_no_otoko_2/
why was he working as a prostitute? did they ever mention anything? it seems like the black haired guy is the' boss' of the place, and it seems like he cares a lot about sakura and helped him after the thing with his 'dad' , if he does, why would he let sakura work in the shop? unless sakura choose to work there?and is the the boss his relative or something like his uncle because he seemed to call sakura's dad 'brother' so many plot holes and only like one more chapters to answer them .
its kind of sad that the mom and teacher are divorced, considering we are shown how they met, but i guess we dont know what happened in between to cause the separation.