two girls were friends for the past three years. the first one has already a relationship with a guy for 9 years, and the other one doesn't. they used to know each other on a same club.
one day a man joined their club and for some time, he has built some interest on the girl with a relationship.
let us call this man akira, and the two girls, the one who has a boyfriend to be airin, and the one who doesn't have be aoi.
akira was feeling something from airin but doesn't just make the advantage; he goes through himself. he started building friendship with her. unknown to him, whenever he ask to have a date with her she lets aoi join them. there was no time that akira and airin have gone out alone together, until a time came their friendship deepen.
then came akira's birthday and she intended to invite airin only, but when aoi greeted him, he unthinkably invited her too. so the three of them went out and had a dinner.
soon aoi, who also has a feeling for akira, asked him why she is not invited in any outings with airin recently. akira said to him that there were things that only he and airin should be involved. but in order to comfort him, he told aoi someday they can go out together. after hearing that, aoi turned her back with a big smile, which akira noticed.
the date of akira and aoi was known by airin. so when the time came that they go out three, airin pushes akira to be with aoi on their way home, while aoi does the same. so akira asked himself why. anyway, just for the sake of friendship, akira usually with aoi on their way home together.
but on contrary to the events, akira has developed a deeper feeling with airin, which later found out by aoi. so when the time came dating each of the girls at a time, he came into silence for the past five days.
without any information, the two girls later, on separate occasions, asked akira what the problem is. akira said nothing.
one after while at the club, airin called akira and asked why. akira said to her that he will tell him if she agrees to date with him. airin agrees, so on that twilight they went on a date. upon going home akira asked airin if he can fetch her til her home, and airin said yes.
aware of the relationship with another guy for a very long time, akira asked airin why she is allowing herself to be with him on a date. airin doesn't know in herself too. she said she recently feel the emptiness and asks the question to herself why. but taking advantage of this opportunity, akira soon secretly asks for a date, and airin agrees.
on that same night, aoi called akira and asked it was so unusual why he became silent all this time. akira told her that there was something i have to do so he had to be silent. adding that there are no problems at all, aoi felt relieved.
there came the time akira has to go abroad and join his family, akira informed the two that he will be gone soon. the two girls somehow felt shocked. he promised that he will invite the two to go out. both agreed.
and the day of that date came. it unlike the previous date, it was a little shorter in time.
and the time has come to say good bye, the two girls waved goodbye to akira. goodbye he said too.
but as the two are going out on separate ways, akira felt the day was not complete...
