"Nice to meet you from now on, Ryuchi-kun."
"Yes, nice to meet you too."
Today marks the beginning of my new life in a new home, facing a man sitting in front of me. He seems to be around the same age as my mother—43 years old.
This man is my new father. Well, it means that my mother has remarried.
And now, I'm in this man's house.
My real father had taken his own life when I was still very young.
Sitting next to my new father was a woman. She seemed to be around my age—about 15, I think.
My mother is at work right now.
"Well then, Now I also need to go to my work. Airin, make sure to introduce yourself." said my new father while standing ready to go out.
"Okay. Take care."
My father spoke to the woman beside him with a smile, and she returned the smile.
This woman is apparently my father's daughter.
And with that, my father left for work.
"…Hello, I'm Airin Tokito."
"Ah, hello. I'm Ryuchi Asato."
"Suddenly asking, but when is your birthday?"
The girl, who I couldn't tell was a sister or an older sister, but was about the same age as me, asked brightly.
"Um... it's July 3rd."
"Ah! Then you're my Oniichan!"
Airin suddenly approached me and hugged me out of nowhere.
"Wha!? Wait, what are you doing!"
"You're such a handsome oniichan~!"
While hugging me, Airin said with a grin.
"...Ah, I'll show you to your room!"
Airin grabbed my hand and started climbing the stairs.
"This is it!"
Airin stopped in front of a door and made me stand there.
She then opened the door with a burst of energy.
Inside the room, there was a desk, a chair, a bed, a closet, and a bookshelf. The space was... well, decent in size.
"Oh, and I guess you might need a computer and tissues..."
Airin paused and looked down, thinking.
I didn't think I'd need a computer, though.
Just as I thought that, Airin seemed to read my mind and said with a smile.
"If it's the internet, I bet there are a ton of naughty videos, right?"
For a moment, I had no idea what Airin was talking about.
But it didn't take long for me to understand.
"I-I don't watch that stuff!"
I blurted out, my face turning bright red.
…Great, now I probably look like one of those tsundere characters from anime.
"...Heh..."
Airin laughed softly.
I snapped back to reality.
"Ah, sorry, I didn't mean to shout like that..."
"No, no, it's my bad. I was just teasing you. Also, you can drop the formal speech. We're family now."
"...Got it."
When I said that, Airin smiled in satisfaction.
...She's kind of cute.
"From now on, let's get along, okay? Oniichan!"
Airin flashed a bright, radiant smile at me.