My Childhood Friend Who is My Girlfriend was Stolen by My Best Friend. From Now on, I'll Flirt with My Ex-Best Friend's Little Sister! - Chapter 19

Getting My Revenge on My Former Best Friend

“By the way, senpai.”

“Hmm?”

Some time has passed since my childhood friend left my house.

The two of us are snuggling up together with a cup of hot cocoa in hand.

“You lent Tsukimiya-san your shirt, didn’t you?”

“…I’m sorry. Just letting her stay the night is already bad enough. I’m…really sorry.”

I quickly put down the cocoa on the table and bow my head immediately.

I must look really pathetic, pressing my forehead against the floor.

If I had been completely ruthless, I wouldn’t have lent my childhood friend my clothes. I guess I’m really lenient after all. I really need to change this part of me…

“Please raise your head, defendant Senpai.”

“Defendant Senpai…”

Rinka called me with a nickname I don’t quite understand.

“The charge against defendant Senpai is indecisiveness.”

“Ugh…that’s a pretty straightforward charge…”

“Even considering the circumstances, letting Tsukimiya-san into your home and lending her your clothes—even though I love you, Senpai, I can’t approve that leniency.”

“Yes, I’m truly sorry.”

“Looking back now, I think there were other options. For example, you could have called the police about a suspicious person in front of your house.”

Rinka raises her index finger as she says so.

“I’m sorry, Rinka. I can’t make such a big deal out of it to the point of calling the police. If any rumours start spreading, it could get messy, and it would definitely reach our parents, making things even more complicated.’

“That’s true. Ah, then why not just call her parents instead?”

“I don’t have their contact information…plus, her family situation is pretty complicated.”

“Is that so?”

“Yeah, well, I’ve been told to keep it a secret, so it’s hard to say.”

“Senpai, I’m pretty tight lipped.”

“Really?”

“Yeah, go ahead and check.”

Rinka pouts her lips gently.

She is exposing her defenceless face.

“Then, I’ll check it out for a little bit.”

“You can check it out for as long as you want.”

We bring our faces closer and share a kiss.

We kiss each other for about five seconds, and then we both relax our cheeks…it’s a bit embarrassing.

“Your lips are really soft.”

“I told you, I’m pretty tight lipped, am I not? So please tell me about it.”

I wonder what the kiss is really for.

In any case, Rinka isn’t the type to gossip. If I tell her to keep it a secret, I believe she will.

“Actually, her parents are divorced.”

“…I see. I didn’t know that.”

My childhood friend’s parents divorced when we were in middle school.

It’s undeniable that the divorce distorted her personality to some extent. Still, that doesn’t give her the right to cheat…well, if I had been more supportive, maybe things would have turned out differently…

“Her father has an irregular job schedule, so even though I tried to contact him, I wouldn’t have known if he was at home or not…sorry, that was just an excuse. I agree with you, Rinka. After letting her into my house, I could’ve gone to manga café or did something else if I really wanted to.”

“No, I was the one who spoke thoughtlessly. I’m sorry.”

“You don’t need to apologize, Rinka. I really am indecisive. I tried to cut ties with her, and yet I ended up letting her stay over. It makes no sense at all.”

“Yeah, that’s why I was really worried…no, I still am.”

Rinka gently leans her head against my chest.

I softly stroke her head, and a sweet fragrance wafts around us.

“I’m really sorry, Rinka. I shouldn’t have done that…”

“Yeah. So, Senpai…please listen to this one thing I have to say.”

“Okay. I’ll listen to anything you have to say.”

“Oh, you said ‘anything’.”

She lifts her face and looks at me closely.

Then with a grin, she says,

“Please let me stay at your house for a while.”

That’s right, she just said something truly outrageous.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

“Good morning, Toshiya.”

When I arrive at school and sit down at my seat, someone calls out to me.

It’s my former best friend.

“……”

“…what’s wrong? You look depressed.”

Given how he’s acting normally, he probably doesn’t know about Rinka and me or that I’ve broken up with my childhood friend.

It’s difficult to deal with him.

I have no intention of continuing our friendship. However, it’s also not a problem that can be solved by just simply pushing him away.

After all, he is Rinka’s older brother. What should I do?

For now, I’ll just ignore him…

“……”

“I don’t know what happened, but if you don’t mind, I’d like to ask for your advice.”

“Advice?”

“Yeah.”

I can’t help but ask again.

It’s rare for him to ask for my advice.

“Actually, I have a feeling that Rinka has a boyfriend. She has been leaving the house at strange times. Today, she left the house before I even woke up, and she has been coming home later than usual. I thought maybe she has a boyfriend.”

“…even if that’s the case, it’s not something you should be interfering with.”

I think I said something perfectly reasonable.

With that, my former best friend quickly adjusts his glasses.

“No, that’s not how it works…hey, Toshiya. Do you know if Rinka has a boyfriend?”

“…yes, I do. Actually, that would be me.”

For a moment, I thought about hiding it from him, but I decided not to.

Hiding it would just delay the inevitable. So, I thought it would be better just to tell him about it.

“Toshiya, what are you talking about? You are dating Tsukimiya-san, right?”

“I broke up with her. After that, I started dating Rinka. Sorry for not telling you about it sooner.”

My former best friend’s expression darkens.

He must have already assumed that I’m Rinka’s boyfriend from the beginning.

His cheeks twitch.

“Are you serious? You guys broke up…well, that’s fine. That’s a matter between you two. But to start dating Rinka right after breaking up—what are you thinking? Are you just messing around with Rinka?”

“I’m not messing around. I’ve always had feelings for Rinka. It’s not like I forced her into a relationship with me. I confessed properly and she said yes.”

“That’s not the issue…”

“Come on, Shintaro. At least support your friend’s love life…will you?”

My former best friend looks ready to lash out at any moment.

I maintain my usual demeanour, smiling softly.

…this guy never thought of me as a best friend to begin with.

He’s the kind of guy who would hold a grudge against me and have an affair with my childhood friend my back.

If that’s the case, then it’s okay for me to continue this twisted friendship for a little longer, right?