Dangerous Tenderness Watashi, Kare no Tomodachi to......

My name is Yanada Hina. Currently I'm a 2nd year university student, I've been living together with my older boyfriend, however... Faced with a big problem, I'm not quite sure what to do. I haven't had my period yet this month. I checked last months records in my notebook, but it wasn't written there either. Did I just forget to write it down? If I wait, if time passes, it'll come right? I'll be OK right? I'm scared and uneasy. Should I talk with my beloved boyfriend? But I think I'd be causing trouble for him if I did that... At that time, my boyfriend's friend came to visit. "You look a little pale. Are you OK? If you have any worries, I can give you some advice." Should I have a consultation with my boyfriend's friend? *** Will you continue your pure love with your boyfriend? Or will you fall for the temptations of his friend? Will an illicit love turn pure? Will your boyfriend find out about your cheating? The protagonist's fate is decided by you! [Translated from Digiket]