Mansion:-

　I was caught by my older sister.

"I'm still in school though."

"We're going home. we're going home now."

　Like that, I left the school being carried by my sister, and headed back towards the mansion where we lived.

"...So that's why I'm the one who's all alone."

　It's not just once or twice that I've come home like this.

　Because of this, I was seen as a dangerous kid who skipped school without permission, so I felt a bit like an outsider, and that probably led to me being a loner.

　Well, I have a lot of other things to do at school rather than making friends, so I'm content with being a loner.

"You have a sister at Arc, right?"

"Do you also interact with people other than me, Onee-chan?"

"Hmmm."

　In response to my words, my sister snorted in dissatisfaction.

"Oh dear."

A case of literary theft: this tale is not rightfully on Amazon; if you see it, report the violation.

　I gave her an ambiguous smile. My sister is seriously ill.

"Look, we're here. We're right here."

"I know. I'm home."

　As we were talking, we arrived at the mansion where we live.

　In the midst of all this, I escaped from my sister's arms, unlocked the door to the mansion, and entered the house.

"No matter how many times I see it, Arc's lock-opening magic is beautiful."

"thank you"

　Locking doors in this world is basically done with magic.

　Locking and unlocking are both magical fields.

"My lunch was a mess by the time I got back here. I need to make a new one."

　Entering the mansion, I headed towards the kitchen, my attention focused on the lunchbox in my hands.

"I want one too."

"Why? Haven't you eaten?"

"I ate it."

"Then you don't need it."

"I can get as much food as you want from Arc."

"That would be a problem. Food expenses would be a huge problem."

　The mansion we live in is a fairly large one owned by Margrave Reinhard in the royal capital.

　Basically, the mansion is managed by several servants, but since my sister and I moved in to enroll in the academy, we have had all the servants return to their territories for the time being since it will just be the two of us living there.

　Therefore, the housework in this mansion cannot be asked to be done by servants.

　So, I was left in charge alone.

　My sister can't do housework at all. She leaves it all to me.

　That said, housework can be solved with magic.

"That's true, but, well... I feel a bit guilty about eating alone. Maybe I don't need to eat lunch anymore?"

"You tell that girl to eat, but you don't eat yourself?"

"I won't get bigger even if I eat. I'll do it with skill."

"It's true that Arc's development isn't that fast, but we shouldn't be pessimistic. We need to have hope, too."

"I use magic to thoroughly examine every inch of my body, and I have a pretty good idea of what my body will become and how it will grow."

　Even in the game, Arc was a shota boy who didn't look particularly strong.

　No matter how hard I try, this is largely due to genetics.

　I can't become a buff, muscular macho guy... which is why the best thing is to have the technique to overcome that.

"What, that magic... isn't it strong?"

"It's the magic I use."

　I'm confident in my magical skills.

　The magic of imagining one's own progress is a piece of cake.

"Let's use the messy, uneaten bento for dinner. I don't need lunch."

　I also had breakfast.

　I don't really need it. I don't really need lunch anymore. I come to the kitchen and just put my lunchbox there.

"So, do you want to go take a bath with me?"

"No way. Not at all. Where did the bath come from? Not at all, that's not it."

　Baths are for taking at night.

　At least it's morning. Not something you'd go in at midday.

"Well then, I'm heading back to my room."

　I used magic to summon my belongings, which I had left behind at school, to my hands, then I said goodbye to my sister and returned to my room.