The Swallow's Lament for a Fallen Nation

[Oriental Setting, Omegaverse, Palace Intrigue, Dimensional Travel/Soul Swap, Royalty/Nobility, Misunderstandings, Harem (Multiple MLs/One MC), Handsome ML, Regretful ML, Cold-hearted ML, Indifferent ML, Obsessive ML, High-libido ML, Beautiful MC, Scarred MC, Suffering MC, Pregnant MC] Lee Jung-hoon lived a life of sorrow and misfortune, second to none. Tangled in a vicious fate, he met a hollow and miserable end. Just when he thought everything had ended. He opened his eyes in a strange world that felt as if he had returned to the distant past. Incredibly, Jung-hoon woke up in the body of Jang Baek-yeon, a noble and the youngest Omega son of Great General Jang Shin-hyun. Upon waking, h...