I Just Wanted to Fall in Love but Became the Savior

There are arrogant childhood sweethearts, a beautiful researcher who has lost her feelings, a beautiful lady who looks old but is actually conservative, and even a frosty female CEO who looks venomous and cold and arrogant. Lu Changkong traveled to a world where people could turn into monsters. He just wanted to fall in love and live a leisurely life. But if nothing else, something unexpected did happen. Lord Lu Changkong was involved in this bizarre world. Is it for them to resolutely break into this world, or to continue his ordinary life?