The romance part got pretty rushed. Two main girl (the nurse and the childhood friend) even go for a harem route as they planned to confess and live with him together (because he doesn't know both of them like him, and they afraid that he will reject both of them because he don't want to hurt any of them) .
After some misunderstanding he choose the childhood friend and live with her ( not knowing the nurse like him). But after that the nurse decided to work with him as his assistant and confess, said she wont give up. They just stay like that and ... the thing wasn't brought up again. Don't know if stuffs were cut out or it's a open end.
Sorry for my bad english, just want to spoil something for fellow romance fans.