@2husakuya
It's depressing but that kinds of run away high school students ends up having sex for money. It happens all the time really, its just we don't know where and how to deal with it.*(effective way of dealing with these problems.)
Since yuzu is 6 month in on running away. The school will start asking her whereabout and eventually the police will get involved. But before all that there should be moments where side character like the junior or the big boob saw the MC shopping with yuzu when their relationship is
close to a married couple like a step father and a step daughter(whos practically playing the role of a wife).
In the end yuzu is gonna be taken to an orphanage and gets adopted and probably after getting adopted and a few years she'll come a greet him as a woman.
Just a guess, but i'm probably way off the grid. it's unclear to me what's yuzu true nature is. Is she that honest? Probably not, i bet she's still wearing a "I'm fine but i'm not really fine.", Mask...
OR MAYBE SHE IS THE DAUGHTER OF THE BIG BOOB. Nope. She acts like a fucking maiden which she ISN'T.
OR MAYBE SHE IS LYING ABOUT EVERYTHING.
She may not be lying about everything. There's no way a highschool student who is missing for 6 month, practically a semester. Not ending up in the missing person list.
My second guess is she was adopted at an early age and was raised caringly(maybe). Then in middle school she was raped
and her adoptive parents feels disguisted. Yeah no... maybe her adoptive father raped her and not long after that gets caught. She then live with her adoptive mom for some years only giving her daily necessities until one day she decided to leave...
I got nothing. I'm going to stop here since i'm not hitting accurate shots...