Yamai Nozomu has an elder sister 2 years older than him. Her name is Hitomi.

Nozomu is in third year of Middle School while Hitomi is in second year high-school, A certain day in autumn.
After school, When Nozumi arrives at the house, it seems that his elder sister came home first. The loafers that his elder sister used for commuting is arranged in the front door.

However, the appearance of his elder sister is no where to be seen in the house. Its an old isolated two-storied wooden house, anyway, its wide. It happened a lot of time when being at home but no sign of her.

Relaxingly looking at the erobook in his own room on the second floor.

「Iyaaー!」
Its elder sister’s voice. He rushed and run down to the first floor.

His elder sister sat flat on the floor of the living room.

His elder sister is a beautiful honor student type. She have an impression of always smiling brightly. It made a gap with such a usual sister, Nozomu is startled to the point of his heart seemed to stop.

Father stood the side of his elder sister.
Even if you say father, this man has become father for only about half a year ago. Mother brought this man without any noticed after father who marries into his wife’s family died of a traffic accident two years ago.

Also, 10 years younger than his 42 years old mother. Though he’s tall and good-looking, his insincere true character ooze out from his expression and manners. It was clear that the man’s aim is his mother’s property. Yamai family is an old family that have history in this area.

「Yoo, Nozomu-kun」

「What are you doing, Ossan1」
「What is it……. When I tried to deepened friendship with Hitomi, she suddenly screamed and ran away. Then somehow I’ve done it」

「With a female high school student dressed in an underwear, what kind of deepening the friendship you’re going to do?」

「Stop joking around……」

He reached the limit of his patience. He steps up to the silent man. Color of fear runs to the man’s face.

When he fist attack the man in the solar plexus and turning kick in his side, the man lays quickly to the floor. Kicking the man in the face many times, nasal bone and front tooth breaks. Probably, the jaw is also broke.

A packing tape was placed in the contained on the living room. Making the man stark-naked and cover the whole body with a packing tape. Especially, the dirty penis is wrapped  approximately triple the diameter. Only the eyes and the nose stick-out from the opening of packing tape.

He informed mother with a mail. A reply has come and says that she’ll return immediately. His mother is an office staff in the family-run business in the neighborhood.

「Nozomu……」

The man lays down on the floor like a cocoon of a beetle. Leaving him alone.

They entered his elder sister’s room. As seems to the a honor student elder sister, the room is amazingly clean. Still, it was filled with scent of a little older girl to the point he almost choked.

They line up in the bed and sit down. Elder sister leans against Nozomu, looking down, she cries.
To the chest of elder sister’s chemise, He unexpectedly peeks in the deep cleavage. Nazomu felt itchy between the legs. The pants of the uniform begun to pitch a tent.

「Nee-chan. What did that guy do to you?」

「What a rascal……What happened to your mouth?」

「The mouth is forced by that guy and has been licked」

「W-were you kissed!?」

「Nee-chan……」

The memories that sure to become lifetime were ruined.

「I want to brush my teeth. Please come together. I don’t want to be alone」

Because it is a big house, there is a washroom and rest room even in the second floor. Elder sister brushes her teeth and washed her face. She seems to have been a little refreshed.

Returning to the room, they sat again lining up in the bed. Elder sister trembles little by little.

「A little……」
Elder sister brought her body suddenly close. He turn his arm and hold her shoulder.

Elder sister in his arm looked up and whispered

「What?」

「……. Its the same as a dog suddenly licking your mouth. There’s nothing to worry about」

「On what?」

「Its alright」

「Nee-chan……」

「Nozomu, Kiss me」

「I may be kissed by a strange man, I’m scared. Kiss me before that. If its you, Its okay」

「Quickly!」

Expression of his elder sister was serious. Was her normal judgment lost because of fear. They looked each other at close range for a while.

(Are you serious……)

The tip of the nose touched. The two movements stopped as they both startled a little.
Elder sister’s breath smells sweetly. That smell, rather than saying its the smell of the toothpaste, it seems the smell of a female high-school student’s fresh saliva.

Their lips overlapped.
It was the first kiss for Nozomu. Especially, he also forgotten his erection and indulge in the sweet feeling of a female lips.