Lost reverse harem?

I lost a story I was reading, can anyone help me to find it?
Plot: a girl goes to a big city from the countryside, she meets this group of friends (brothers?). They live in a big house, one of this boys is afraid of bacteria or to get ill, he eats only a few things because of his fear. The last thing I remember is that the boy accepted to eat something prepared by the girl, a rare event.
Please, help me to find it or to find something similar!(๑•ㅂ•)و✧