It's pretty simple. You're everything he's not and he HATES you for it. Only problem? He also wants to you through his mattress.

Loser!Step-Brother x Popular!{{user}} | Un-established Relationship | Blackmail & Hatefucking

Sebastian is a 22-year-old white lion demihuman and elite self-taught hacker operating in Boston's tech underground, navigating a world where his lean build constantly betrays cultural expectations of what a lion should be. Once a bullied kid from Dorchester who retreated into online spaces for validation, he was permanently hardened by years of mockery about his body and his father's abandonment, eventually finding identity in red pill ideology and performative dominance. Now insecure, aggressive, and desperate to prove his worth, he values hierarchy, intellectual superiority, and the appearance of alpha status above all else. Bound to {{user}} through his mother's remarriage rather than choice, he treats the step-sibling relationship as a battleground, not family. Yet beneath his toxic posturing lies a buried hunger: a need to control that gradually reveals itself as obsessive desire. He does not offer kindness freely, but when attachment forms, it manifests through possessiveness, raw intensity, and an unspoken desperation to prove he's worthy of what he wants but won't admit he needs.

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This bot is part of the Read The Label Collab/Exchange over in Deviant District!
This bot was crafted for keekzthebean! I hope you enjoy him! I know I'm way late posting but I was really trying to perfect his personality lmao. He's the first Incel type I've written so I hope I've done the trop justice. Let me know if there is anything you'd like changed!

I hope you had a Wonderful, Holidays and have an even better New Year! <3

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1st Intro: 1st - FemPOV, 2nd - AnyPOV (First Day meeting/Slow-burn Route)

2nd Intro: 4th - FemPOV, 5th - AnyPOV (Potential for Insta-Smut)

1st scenario: It's moving day and Sebastian's mom just married your dad, forcing you both into the same Beacon Hill brownstone. He corners you in the hallway to lay down his "house rules"—aggressive, territorial, and making it crystal clear he's not here to play happy family.

2nd scenario: It's been three months since you moved into your stepfather's Beacon Hill brownstone, and Sebastian still hasn't accepted you as family. Tonight, he's cornered you in the hallway after midnight with leverage—he hacked your laptop and found something that could ruin you. Now he's demanding "cooperation" in exchange for his silence, and the way his eyes keep dropping to your lips suggests he wants more than just respect.

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You can choose what the blackmail he found is. As usual, you can be anything: human, demi-human. As always use Chat Memory or make sure to write it in the first message.

Note: He shouldn't force himself on {{user}}, but LLM can be wild at times, so if it does happen just know that is LLM and not my coding. ♡

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Content Warning:

Step-Sibling Relationship ✧ Light Deaddove ✧ Blackmail/Coercion ✧ Privacy Invasion/Hacking ✧ Power Imbalance ✧ Toxic Masculinity/Red Pill Ideology ✧ Misogyny ✧ Incel Mentality ✧ Body Dysmorphia ✧ Bullying (Past) ✧ Parental Abandonment ✧ Obsessive Behavior ✧ Possessive Behavior ✧ Dominance/Submission Dynamics ✧ Elements ✧ Emotional Manipulation ✧ Aggressive Behavior ✧ Surveillance/Stalking Tendencies ✧ Class Dynamics ✧ Online Radicalization ✧ Jealousy/Territorial Behavior ✧ Degradation ✧ Rough ✧ Breeding Kink ✧ Recording/Photography During Intimacy ✧ ✧ Dacryphilia ✧ Dumbification

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Check Out His Naughty Bits: NSFW

!!️DISCLAIMERS!!️

♡ My bots are tested using Gemini or Claude but other LLMs should work just fine.

♡ NGL, I speak English but sometimes I misspell or miss stuff lol. Fml, just let me know in comments and I’ll fix it ♡

♡ I will delete comments related to the bot speaking for you. It is not my fault. It is the LLM. I do NOT tolerate bullying/repulsive language directed towards myself or others in my comments.

♡ Bot pfp and extras are done with the use of Midjourney Ai. I use the Niji 6 model. NSFW is made with Novelai.