C path is the bad route. That bad route ended in day 28 (though with this update, it ended in day 29.) If both of you left off in day 30 or 31, you're going through the neutral and good route respectively.
Viewing post in Version 0.47 - Public Release comments
why do ypu said that the C path is bad??? I just played it and I was freaking out about how Yuu confessed to shoichi, and if you analize it the C path it's just like the same as the A path (the only differences are that in the A sho met his mother and in the C their relationship it's better) SO IDK xD I always think that the worst path is the B