My little sister is too cute, so I have to protect her!

After dinner, I parted with my little sister and went back to my room. There, I began to start my operation. A few years ago, when I started to notice that Mio was getting extremely cute, I created a computer program named <<Little Sister Protection Program>> (a.k.a. LSPP). Its purpose is to alert me when my sister is called out for a confession (I fiddled with my sister's phone a bit...) and to provide me with the details of who came to confess (facial recognition + a little hacking).

"This time it's Uehara, huh...", I mumbled to myself.

Uehara is a well-known delinquent who is studying in the 12th grade. He is also the captain of the Karate club. His heart is extremely wicked. He always gets what he wants, without caring about the means to get it. It is no doubt that he will not easily give up on Mio.

"Tsk. What a troublesome guy.", as I said that, I began to prepare for tomorrow's "Mission".

**************

My plan is quite simple. I'll let Mio walk to school alone and then I'll tail after her. It is no doubt that Uehara and his gang will use this time to act. Thus, when he comes out, I will deal with him swiftly without letting Mio know what happened. The plan was about to set into motion when...

"Nii-sama! Let's walk to school together!", my little sister said that as she tackled me.

"Sorry, Mio. I can't do it today...", I replied to her. It pained me to do this, but there was no other choice. In order to lure Uehara out, I must let her walk to school alone.

"T-That's f-fine... Yuuji-nii. Y-You can g-go ahead w-without me...", she said that as she started to sob. Her sad expression made my mind go blank. My little sister's tears are streaming down her face. It was as if she saw the world ending. I couldn't stand it. I couldn't stand seeing my little sister crying in front of me. The next thing I knew was when I pulled her into my embrace.

"I-I'll go with you, Mio! So don't cry, okay?"

"Really?", she looked up at me with expectant eyes.

"Yes, really. You're my precious little sister after all. Nothing can ever be more important than you.", I said that with a smile.

"Yay! Nii-sama is the best!", as she says that she hugged me really tight.

Since the plan could not be executed, it might be a little more troublesome to deal with Uehara and his gang now. But I guess that it can't be helped. I mean, who can resist that extremely cute request from my little sister?!?!