right click and select save
there are actually 4 different storylines for this game, to enjoy it as much as possible, i think its best to start from the worse to best
Spoiler for My opinion to this game:
This game actually gave me more than i expected, the first time i played it, i got ayano's storyline but forgot to save it before quitting on something like day 26, so i never saw her ending before i got maria's. after seeing maria's first ending (yes she has a second ending with minor difference), i got depressed. HOW CAN THEY ALLOW SUCH A SAD ENDING, how lonely hiroki must be now... But never the less, i can't praise her storyline enough, and matched with the music, anyone with a lower EQ will burst into tears, i might have if i understood her unsubbed words at the end. besides in maria's storyline, maria is basically a private nurse who heals hiroki physically and mentally. but in maria's own storyline, she become's a lover, a fraud and a mystery as well. I am left speechless and unsatisfied by how much they left unexplained. This led me on a info hunt which led me to "Private Nurse : Maria" the PS2 version of Private Nurse, unfortunately, I DON'T HAVE A PS2 ~_~.
I have collected every CG i could in the game, yes in my game the memory says 100%! and i'm not suprised to say that all the rare shots are just minor variations of Maria's sex scenes. Ayano's scenes were all done by the time i have done 2 or 3 of her after diaries and there are a few pictures and a video from maria's second ending. After completing maria's second ending something special happens, what that is, i'll let you find out yourself. Also, i am not pleased to know that it is impossible to find the full version of the theme tune online, however i used my MP3 player's line in function and got it
another thing is, if you people are looking for a real walkthrough to this game, i suggest you stop wasting your effort, the only thing you'll find is the one stated on the first page of this thread