I'm going to a place without people along with the cat, I quickly think about what to say to that cat so it doesn't get in the way, I also can't just try to get rid of it since I need it.
But it probably needs me too, otherwise, it wouldn't have paid any attention to me or given me the power to go back in time.
I may not know its motivations, but in fact, it doesn't matter as long as it doesn't affect my sister in any way.
"Okay, demon, you interfered again... you brought that policeman and got in my way, and that policeman strangely let me go easily, did you do something?" I didn't finish giving my apologies to convince the policeman, but he easily let me go.
Which is not so natural, given that security usually has some prominence, he wouldn't have let me go so easily, nor would he have just taken money from the thief's wallet and given it to me, easily believing what I told him.
"Yes, I said I would take revenge for you throwing me in a trash can, but I gave you a little help to be released soon, after all, you seemed to have rethought what you did," the cat says with barely contained malice.
"Okay, demon, I think we're doing this wrong, we're in the same boat, we don't need to be like this with each other, you want something from me and I want something from you, but we don't need to fight."
"Mutualism is much more useful than competition, don't you agree?" The cat ponders for a moment, thinking calmly about what I said as it jumps closer to me.
"You're right, if you play by the rules, I'll help you, Shizune," the cat confirms while speaking in metaphors, but it's easy to understand what it means.
'Play by the rules... in other words, everything I do that has no connection to my sister has to be something bad...' I can't understand why it wants to turn me into a villain so much, but there must be something behind it that is useful to it.
"Okay, demon, so how about we formalize this, we're two allies, I don't care about anything or anyone other than my sister, we're not enemies, we don't need to fight or be rivals."
"In fact, it's thanks to you that I have the mother of all second chances, the power to go back in time whenever I want." This power is undeniably incredible, I have infinite second chances to use and abuse whenever I want.
"We can be great partners, as long as your goal is not a threat to me or my sister, there's no reason for us to fight." The demon ponders for a moment.
"Okay, Setsuna, then I'll stop interfering in your life as long as you don't try to cheat, like getting money by betting on the lottery, understand that things involving your sister, I won't interfere with."
"But things involving you, I can always interfere, after all, we have a contract."
'That... makes sense, now it's explained...' The lottery money is not a benefit directly linked to my sister, it's more linked to me, which means it interferes.
It's probably deeply tied to our contract and the parts I don't know, after all, I didn't even know all the things in the contract since I was practically accepting anything.
"So how about we formalize this, demon, shake my hand and tell me your name, partners should know each other's names."
I wonder if this demon will accept, I'm also curious to know its name.
Soon the demon raises its paw to me, accepting the agreement.
"Handshakes are usually contracts, Setsuna, you should be careful with that, but I understand what you mean... my name is Hexael." I hold the cat's hand and squeeze it lightly.
'Hexael... I don't know of any historical or mythological demon with that name...' The name doesn't remind me of anything, and it also doesn't make it clear whether this demon is a girl or a man.
"Hexael, my obsession with my sister seems to be increasing, is that your fault?" I ask with doubts about this subject, it's something I need to think about carefully, but it may be the fault of this demon, the cat tilts its head in confusion.
"Are you serious, Shizune? Obviously, it's your fault, you're the one who's becoming more obsessed on your own, and if you yourself recognize this, it means the situation is serious, I wonder if you'll reach the point of hurting your sister."
"NEVER!" I say angrily, raising my voice.
"...I would never hurt my sister..." There's no way I could be a threat to her, I may not have the sanest head, but I know I would never do harm to my sister, I love her and do everything for her.
Everything I do is right and no one is going to make me think otherwise, this rotten world doesn't even deserve for an angel like my sister to step on it.
I calm down from this small lapse, I get irritated easily if it's something involving my sister in a negative way, like what he said.
"Hexael, I'm going to introduce you to my sister." I think about how to use this partnership to the fullest, and I know my sister likes cats and animals in general.
"That's right... I'll introduce you to her and you have to behave... if you hurt her, I'll trap you in a bag with stones, beat you with a stick, and throw your body into the ocean." A warning without a joking tone.
"..." Hexael looks at me with a disbelieving look, realizing that it's not a joke, but a warning of something I will actually do if it hurts my sister.
"Is this how you treat your partners?! You sociopathic siscon... or rather, you're not even a siscon, just a sociopath, since they're not even real siblings."
"..." I feel bothered by this statement.
"She's not my sister..." I repeat the words, it seems so strange to say that, I know we have no blood relation and that I was adopted, and now that I've gone back in time, we don't even have an emotional connection or adoption papers.
But to me, she will always be my sister.
"If she's not my sister... I'll make her see me as an older sister." I murmur with conviction, I'll enter her life as an older sister, even if we were the same age, she used to call me the younger brother.
But now she'll be the younger sister and I'll be the older sister who protects her from everything.
"Your mind is so strange, you've turned something bad into plans, I can just tell by the expression on your face, that it's chilling! Setsuna, would you destroy the world for your sister?" The cat asks as a joke.
"...Yes." But for me it's not just a joke, if it's for Ayane, I can completely destroy this useless world, I don't need anything else but her, and if necessary, I'll go over everything.
"...Hmm, you're really strange, you know? Most humans would never live for another like that, humans are selfish and live only for themselves, but you have a unique kind of selfishness."
"Your selfishness aims only for the best for your sister... humans are really such curious beings, hihihi." The cat speaks with a chuckle, but I ignore it.
"I wonder if one day your protective selfishness will self-destruct." I take the money I earned out of the front pocket of my dress as the cat murmurs something extremely low.
I started counting the money I earned.
'Hmm... it's so little...' Until there is a way that I may be able to cheat at bets, but this way is not pleasant, it would essentially be to go to a bet that happens at the moment, see the result, kill myself, and then come back to bet correctly.
That way the reward would be less, but it would avoid the demon interfering, in addition to being an evil cheating that could count as more power for the demon.
"...Uhum, uhum... okay." The demon suddenly starts muttering something louder, agreeing with something.
"Setsuna, I need to leave now, something fun happened somewhere else, hehehe, I hope we both achieve our goals, see you tomorrow." The demon disappears in a black mist, leaving me alone.
"..." I decide not to pay attention to this, at least I have some money, so I start looking for a food stall, I can't afford anything too expensive, so I'll get something that fills me up and is cheap.
After walking around the streets for a while, I find a place that sells snacks, so I buy a hamburger, it's quite large and will probably satisfy me, I'm not very hungry, probably because I've changed and am now stronger in all aspects.
I eat the hamburger slowly, thinking about how to make Ayane see me as an older sister, it shouldn't be too difficult, she's a nice person and probably won't mind if I'm gentle and ask her to call me older sister.
I know she's probably lonely right now, so if I approach her correctly, everything will be fine, I'll be able to be her older sister.
After finishing the hamburger, I start walking around the city looking for a cheap apartment to stay the night, in the end, I find a somewhat dilapidated 2-star hotel, but with a reasonable price for one night.
I pay the receptionist and go to my temporary room, I'll only spend this night here to rest, and then I'll see what I'll do, anyway I doubt that today my sister will try to be a magical girl monster hunter.
After almost being raped by a monster, she'll be a little more cautious.