Transmigrated as the Cuck.... WTF!!!

Cassius, a character in the eroge Academy of Roses, is consistently subjected to public humiliation and designated as the ultimate cuck. However, his fate drastically changes when Arawn, a disillusioned gamer seeking revenge, possesses him. Waking up as this pitiful character is far from ideal, especially when Arawn discovers his own sister has also been transported to this world and is posing as Cassius’s noble sister to remain undetected. The situation escalates when Arawn learns his sister is about to be trapped in another forced engagement. Driven by a powerful sister complex and armed with system powers and unimpressive stats, Arawn is determined to secure a peaceful life for his sister. He resolves to defy the narrative, break the rules, and manipulate any protagonists for his own agenda. This cuck is now ready to fight back with lethal force. The protagonist is a villainous, psychotic, manipulative, borderline insane, and unhinged character.