I Became the Villain of a BL Novel with a Certain Bad Ending

A South Korea where gangster cleanup is nonexistent, all within my younger sister's BL novel. I've been transmigrated as the omega young master of the 'Blue Dragon Clan,' a prestigious gangster family! It's already unfair enough to be born an omega in a gangster family that only treats alphas like humans. To make matters worse, I'm the villain who meets the most tragic bad ending in the story. But something's off. 'Cha Jiwon, I'm your fiancé.' Starting with the dominant alpha main lead who should despise an omega like me. 'I can't bear your absence, hyung.' The main submissive lead, with a crazy side that doesn't match his refreshing looks. 'I won't let you die, no matter what.' Ev...