I keep eating every bite of food he delivers to my mouth, when I was full I even thought about asking him to stop but for some reason I gave up on the idea as if that would be bad too.
After I finished eating everything, he gets up to leave.
"B-Brother, wait..." I don't want to be locked up here.
"Do you need anything, sis?" He really stops and asks, so it doesn't even seem like he's done something terrible to me at some point.
"C-Can I go out?" I ask with some hope, I have a plan to try to convince him.
"No" He denies with a bit of coldness and turns to leave.
"Wait... I-I don't remember anything... B-Brother, I don't know why I'm trapped here... C-Couldn't we forget about this and live together normally?" He really stops to think for a moment.
"T-Think about it, I don't know anything, so there's no reason to keep me locked up here... W-We could do so much more together if I could move around the house... B-Besides, I can't even run away, I don't remember anything, running away would be stupid" I say something logical to try to convince him.
"...Well... since you've been such an obedient girl even without remembering anything, I guess I can give you this vote of confidence... although you still won't be able to leave the house or go to college until I allow it."
"Y-Yes..." He looks at me like he's expecting something.
"T-Thank you, brother." He nods and leaves, after a few moments he comes back with a key in his hands, he comes to me and unlocks the chain from my ankle.
'Did it really work?... I don't need to complain' He asks me to follow him, now that I'm out of the room, I notice how huge this place is, proving that we're really rich.
We go through long hallways, in one of them I see the open door.
"There is the memory erasing machine... I'm sorry, I wanted to erase only months of your memory, not erase almost everything..." He apologizes sincerely.
"I-It's okay... it's amazing that you have this... must be expensive." I have no idea how much a machine like this would be worth.
"Expensive? Oh no, it was cheap, because I built it myself... but it was a failure considering what it did to you..." He says, not caring much about the fact that he created something the government would pay billions for.
'H-He's a genius... W-Why is someone like that so crazy to the point of chaining up his sister?'
"Brother... where are our parents?" I ask as we walk, ignoring the room with the machines.
"...They're dead... they were useless scumbags" he mutters the last part, but I couldn't understand it, but it gave me a chill because of the tone of voice, I think I'd rather continue not knowing what he muttered.
"Brother... what do you do?" I don't know anything about this boy, I just know he's crazy and scary, and given that I'm his "sister" he's also a siscon.
'Wait... he's the yandere in this life... and loves me...' I feel disgust at what I just thought, I'm not really his sister, it's just because of the curse that I'm here.
In other words, the current me has no real ties to this boy, but to this boy I'm still his sister.
It's simply disgusting to think that he loves me romantically.
"Here's your room, sis... unfortunately I can't return your memories... but don't worry, we'll create new memories together" He says when we arrive at the room.
"And about your question... I'm currently in my first year of college, I wanted to be closer to you so I'm in the same area you chose... but unfortunately you're 1 year older than me, so you're in a class above mine."
"So you're 19 and I'm 20?" I ask while calculating the numbers.
"Yes, I forgot to tell you your name is Shizune Accursed... I really don't know how much you don't remember... the machine eliminated 95% of your memories, but the name is something basic, so it would be possible to remember."
"I'm also a technician and assembly engineer for advanced machines in my spare time, as well as a Research and Development Engineer at a company, I think I make around ¥529,366,000 a month or something like that."
"But don't worry, I always have time for you, in fact I started making machines thanks to your emotional support" He says excitedly.
'He's like a super robotic genius?... Do I really have a chance of not getting screwed in this world?' Just that makes it clear that I can't beat this guy in intelligence.
"That's incredible" I say to him.
"You don't seem impressed" He says seeing my expression.
'My girlfriend was death and I'm cursed, I guess you being all that at such a young age isn't the impressive part'
"It's just that I'm not sure what that is..." I also tell the truth, I have no idea what these things are, I only know they have something to do with technology.
"I understand, in any case you've never been very interested in these things, but your support is comforting" He opens the door to the room and invites me in.
Soon I see a very cute room, with lots of cute plush toys and even the furniture has a cute design that seems almost childish, like the room of someone who forgot to grow up.
"This is your room... You can walk around the house, but don't try to open doors you shouldn't, if a door is locked, ignore it" He speaks with a tone of warning, I nod in confirmation.
"Great, it's already late, so it's better for you to go to sleep, I have a college project to do, so I'll be busy..." He starts to leave, leaving me here.
"And don't forget, sis... if you try to run away from me again, I won't be so merciful, I trust you" He closes the door after this warning, making my whole body shiver.
Now that he's gone, I start to search what is supposedly my room, there are a lot of cute plush toys.
After almost an hour of searching, I got tired and started throwing the plushies against the wall to vent the anger that has been building up over the past few days.
However, one of the plushies makes a loud thud sound against the wall, I go to it and hold it in my hands.
'It seems heavier than the others...' I squeeze it hard and it seems to have something hard inside, I open the back part that has a zipper where the stuffing of the plush toy is inserted, and what I find inside is a diary.
"Oh... it's my handwriting" I open it and start reading.
[Day 12/02/2989.
Dear diary, I'm scared of my brother, he's scary, he forces me to be the perfect sister and if I step out of line, I'm severely punished.
Since our parents died, he's been like this, I wish our parents were alive.]
[Day 01/01/2990.
My treatment has gotten much worse during this period, I refused for my brother to feed me and in return he made me starve for long periods and then gave me a very low amount of food just to let me starve again as I was locked in a simple room I couldn't write.]
[Day 01/02/2990.
My brother is slowly molding me into the "perfect" sister for him, I hate it, I hate being controlled, I wish I could run away but my brother is a genius who is always one step ahead... but if I'm obedient he rewards me.]
[Day 01/04/2990.
Today I found out that it was my brother who killed our parents, apparently dad and mom neglected him and I was the only one who took care of him, so he said he likes me. But he said I'm different from what I was before, so he's making me go back to being the sister he loves.]
"T-This is serious?" With every line I read, I get more scared, the next line is stained with many tears, a large part of the pages had tears, but this next one is very blurred due to crying.
[Day #/06/299#
I hate this, I hate everything, today my brother took my first time, he was quite upset because I tried to run away from him after not being able to bear the punishments anymore.
Why did he do this? Why is he so cruel to me? Why do I have to do these disgusting acts with my own brother? Where did I go wrong to end up like this?
My brother found the diary but he doesn't seem to care about it, but he got really angry when I tried to ask the police for help, but it turns out he bought the cops and then punished me for being wrong... am I really wrong? Am I the problem?]
[Day 01/09/2994.
Today I turned 19, at this point I've given up on everything, my brother loves me and as the perfect sister I love him too... I just wish we could have a normal life, I think I'm jealous of my classmates who have normal siblings.
Will my relationship with my brother ever be normal again? I don't know... I'd like it to be... he stopped punishing me because now I'm obedient, I guess that's better.
I don't like the pain, so I prefer obedience.
At least I can go to college as long as I obey, I think that's good.]
[Day 17/09/2994.
Today I met Rayan, he's a cool guy, we quickly became friends, he also lost his family early, but he turned that into strength, I wish I had that courage.
But I think it's too late for me to be brave...]
[Day %#/@$ 299#.
Today is my 20th birthday, my brother gave me lots of cool things, but I think the fact that we have sex even on this special day took away the gratitude for the gifts...
But Rayan also gave me a present, it was something simple but I liked it a lot, it's a carrot-shaped pen, it even has a compartment to hide sweets.]
[Day %@/%# 299#.
My brother found out about my friendship with Rayan, my brother thinks I love Rayan romantically, he got angry but didn't do anything.]
[Day %#/%# 299#.
I found out that my brother plans to erase my memories of the last few months, I don't want that, I finally have a true friend who really cares about my feelings.
I hate this, I don't want to lose my only friendship like this, if I lose this friendship, all that will be left for me is my brother's distorted love and the sexual relationships we have, I need to stop him.
I decided to damage some components of his machine, I'm sure it won't work anymore if I remove and disconnect some parts, and I also need to run away from my brother.
Fortunately, Rayan agreed to help me even though I haven't explained why I want to run away.
So I'll damage the machine and run away with Rayan, if my brother notices the machine is broken he may take a while to notice I'm gone, and if he doesn't notice it's broken he won't know someone tampered with it and will think it failed... dear diary, wish me luck.]
"It's over..." I'm scared and disgusted by what I've read, and now I know the reason I have no memories in this world.
And worst of all, I know that Hiroshi is even more insane and distorted than I initially thought, he had sex with his own underage sister while basically torturing her psychologically.
Now I know why my body is so afraid of my "brother", he's simply a sociopathic maniac.