Chapter 2 - Tutoring My Childhood Friend's Little Sister

“The first! Ko-nii’s study session~! Yay!”

“You’re the one who has to learn, you know?”

Do you understand that?

The high-spirited creature in front of me is none other than Manami Takanishi, Aisa’s sister.

I’ve been treating Manami like my own sister and she’s been treating me like her brother. At least that’s what I think.

In fact, I think we have had more skinship than regular siblings do….. It was just proven that her habit had not been broken even at her current age.

“It’s been way too long! Really! You see onee-chan at school, but I’ve been lonely, you know?”

Looking up at me with glistening eyes, I can tell that Manami really is beautiful. As expected of Aisa’s sister.

I’m glad that I’ve gotten used to her and don’t look at her that way anymore, but I’m starting to feel like I’ll be in danger if she keeps growing like this. Though, if you just think about Aisa’s demonic expression, you would never think of touching her.

“Even though I’ve come all this way to get into school with you, I can’t see you or onee-chan at all, plus I can’t keep up with my studies……”

I stroked Manami’s head as she was nodding off.

“Well, in the first place, it was a miracle that I got in.”

She had a good-looking face just like her sister, but her studies were far worse than Aisa’s.

That being said, she’s better at sports than Aisa, and has the athleticism to go toe-to-toe with me, an older boy.

Due to this, when we played outside, I inevitably spent more time with Manami than with Aisa, and that’s probably why Manami began to miss me.

My studies were better than average, but I decided on a school where all of us could go.

“Well, since Ko-nii is here, it’ll be okay!

“Don’t you ever try to learn from your sister?”

“Hey, onee-chan is very strict with our family…..”

Manami gives me a distant look. Well, I can sort of understand. I guess it’s pretty tough in her family…..

“More importantly, Kouki-nii! Are you getting along with onee-chan properly?”

“Getting along with Aisa…..?”

“Yeah! Even though we’re in the same school, you never talk to me or onee-chan!

Ah…..I guess in Manami’s mind, we’ll always be close childhood friends.

“We haven’t talked much at all lately.”

“Ugh, no! That’s why onee-chan is always in such a bad mood!”

I think that’s because of a different reason….. I’ve seen her complain a bit in class about weird boys approaching her.

If I were to try and talk to Aisa, the whole class would probably be talking about that ignorant idiot who misunderstood and called out to her.

“Anyway! Kouki-nii is supposed to take care of onee-chan! You even promised to marry her!”

“That brings back memories……

As was often the case with childhood friends, we promised that too. Well, considering the current situation, only Manami would be conscious of such things.

“Well, let’s get to studying.”

If she digs any deeper, she may be shocked by the truth.

That’s why, though I’m sure it will come out eventually, I will put it off for now.

“Mou. You’re not taking this seriously, are you? Anyway! You need to give onee-chan more attention!”

“Okay, okay, I will. If you study hard.”

“Ah! I told you, didn’t I? I can do it if I try!”

“I know you can.”

I wonder how hard she had worked to catch up with Aisa and I.

“Mhm. That’s good then.”

“Why are you being so pushy?”

“Tee-hee!”

I gave her a light push and she smiled happily. Manami’s always been like this.

“Let’s do this. Math first, right?”

“Take care of me well, okay?”

Since this is considered a part-time job, I’m getting paid for it, so let’s get more enthusiastic.

I seriously hope that this hardworking girl will be rewarded for her efforts.