Kai Kanaya, the eldest son of one of Japan's wealthiest conglomerate families, loses everything when a man named Yoshifumi Ato appears, claiming to be the true heir. Stripped of his wealth, status, and identity, Kai is cast into despair—until a fatal truck accident seemingly ends his life. But when he awakens in another man's body, he realizes this is his second chance. From the ashes of ruin, the disinherited heir begins his rise to reclaim everything that was stolen from him! [Original Webtoon](https://jp.piccoma.com/web/product/188530)
One evening, ordinary Office Lady Narumiya Maika suddenly found herself in another world. While attempting to find a way back home, she somehow ended up becoming a castle servant for reasons she could not fathom. The country's young king is even less fathomable, constantly proposing to her to despite her own firm rejections and lack of qualifications. This king protects his nation with the mysterious "Power of Salvation" and doesn't listen to others in his own optimism; but, for Maika, the King's doting is too frustrating. Source: MU
https://mechacomic.jp/books/223127
In a world where magic is everything, Princess Electra is branded as incompetent and unable to use any magic. But one day, the enemy country's most powerful magician, the Holy King, approaches her, claiming that she is "the only person who can kill him"...!? *"If you could kill me, I couldn't be happier."* (Source: Kadokawa, translated)
CoroCoro Kuukiyomi. The explosive birth! A miraculous collaboration between the hugely popular game "Minna de Kuukiyomi." and "CoroCoro Comic"! All 15 works, including currently serialized works and legendary works from the past, have been turned into "Omae." Enjoy them together with the popular game! (Source: Shogakukan, translated)