Tian Jiang Xiongmao Qiu Baobao: Meng Fei Laixi

Thanks to a botched job by the King of Hell, Su Ranran was mistakenly killed shortly after her university graduation. To make it up to her, she was promised a new life as a Ms Perfect... but became a fatty panda instead!? And to become human again, she needs to revive the heartbeat of a cold-faced prince regent!? Original Webtoon