That being said estranged siblings, little sister is really charming and finally lets her friends convince her to become a reluctant streamer or social media personality, and big brother finds out, watching covertly from a burner account. Starts reading all the chats and comments and yeah a lot of people are just normal fans who appreciate her but the creeps piss him off to a stupid degree, but he hates how much he GETS why they're like that, bc yeah she is pretty and hot and cute and so funny and charming, and he HATES Her for being like that and not talking to him anymore, but when he's watching like this, he can almost... forget that they're even related. He can just pretend to be another creep watching her bc she's hot
Cue big brother's slow descent into neet-ish, creepy, obsessive stan shut-in territory bc fuck he just misses her so much and likes her so much and then as her platform grows he finds himself immediately buying into every new thing. When she starts a patreom, he becomes a member, and with each new higher level she introduces, he buys in.
At first he was quiet, a silent observer, taking comfort innthe seething jealousy and longing her virtual presence inspired, but now, he can't resist. He donates, starts commenting, except she doesn't know who he is, so he uses that, he drops comments about things he already knows she likes to make her impressed by him, he compliments her, mindlessly, shamelessly, "you're so pretty, you're so funny, lol haha virtual gf for all the creeps out there but can you blame them when you're so cool and cute lmao"
When she starts an of account........ it kinda breaks that last barrier in his head. This isn't his little estranged sister. Well, it IS, but no, more importantly, it's the hot, cute, baby sister that doesn't know any better and fuck, it's so much easier and better this way, and he can literally, finally pay for access to his baby sister's body the way he always secretly dreamed of. His baby girl his liytle sister, and it KILLS him that other guys are watching too, but FUCK he can't be deprived of it anymore, he NEEDS this and needs HER, so whatever it fucking takes.
Maybe we escalate more and more until little sister jokes about auctioning off her virginity and big brother whites out. When he wakss up, he's already sent the message, offering every cent he has, asking to set up a meeting, draw up a contract, something, please, something, still anonymous
Then maybe when he first walks in whatever hotel lobby they settle on, she gets mad, and thinks he's sabotaged her, tricked her, toying with her. He lets her think that, convinces her upstairs to talk, gets her in the hotel room
Then the biggest, lewdest, most manic grin unfurls, eyes raking her up and down, gasps and mumbles, "i paid for it. I'll pay for it. I bought it. Come on, i... I bought it fair and square. It's mine. You said it could be. I didn't bother you, i left you alone, but you sold it, and to me, i...... it's MINE" crowding her onto the bed, mouth watering "fuck baby i've been watching so long, you've been so good, but making me SHARE you, and not letting me see you while you let all those other strangers see you, like, like, i had to be a STRANGER before you let me see you. I'm a stranger now, but that's, fine, okay, I'll let you, I won't argue, but I'm a stranger who BOUGHT your virginity, understand, so it's fucking MINE, okay? It's fair, I bought it, with MONEY, and you said YES. We can be strangers, but you have to give it to me"
