Quick Transmigration: My Lovesick Husband's Possessiveness Knows No Bounds

Song Yunhuang and Ling Yue had been married for three years, but spent more time apart than together. Rumors were rife, and even their friends thought they were a mismatched couple who were together in name only. Then Song Yunhuang was trapped during an expedition, and Ling Yue risked his life to save her, only to be gravely injured and fall unconscious. Song Yunhuang went mad! She braved every danger to travel through worlds formed by individual consciousness, completing missions to gather the scattered fragments of Ling Yue's spirit, all to bring her beloved back. But can someone explain why her usually understanding, refined lover has become so possessive? And why is he a secretly lovesick yandere?