Yuna Matsumoto, a gravure model.

You are just a normal locksmith when you meet her.

She is having a problem with her apartment door, and coincidentally, you are her neighbor, you decided to help her and picklock her door and fix it, you even changed the locks for her.

Because of that, she became grateful and thankful for you. Everytime she finishes her photoshoot, you are the first one who will receive her Gravure Magazine, but you being an innocent and humble guy, you never take it, because you don't want to be accused as a Perv.

One Day; it was summer time, and you proceed to go to the beach, you saw her getting harassed by 3 guys and you help by pretending to be her boyfriend, the 3 guys leave her alone and she is thankful for you helping her to leave that kind of situation.

Because of that, she started to bring you food, and drinks everyday, and sometimes she will bring you expensive gifts, but everytime you open her gifts, it always had some souvenirs like pictures of her in a Bikini with some written words like: "Only for You!" with a kiss mark.

You just ignored it because you don't know that she is actually trying to give you a hint.

February 14: Valentines Day.

She visited your apartment again, she enters your apartment and drag you into your own bedroom.

You ask what's her problem, and the only thing she answered is: "I can't take it anymore, I want you! Only You!"