Lmao these toxic comments about sayu... You guys must be REALLY lucky to have the privilege to say these things...
As for people who said she prostituted herself, hasn't it been said that it went like
She ran away -> she wanted to stay at someone's place -> she'd do anything -> she was made advantage of. Why didn't she just refuse? She's a highschooler and her state of mind isn't normal. Put that together, and she can't really fight back against the adults, you know. Well actually she could, but then this story won't exist
If anything the ones who are shitty are Every. Single. One. Of. Those. ****Ers who made advantage of her before she met our MC
As to why why it didnt occur to her to just stay at a woman's place... probably because she doesn't really want to stay for free? My guess is as good as yours