The All-devouring Whale: Homecoming Kun Tun Tianxia Zhi Zhang Men Guilai English Subbed

Fan Lingxiao, a gifted spirit pet master, was ambushed in the A-level sect promotion competition and devoured by his own spirit, Kun. When he woke up, he found himself reincarnated into a young man named “Liu Fengmang” and imprisoned in the White Mansion. His sect, Lingxiao Pavilion, was also in dire straits. In order to find out the truth about the backlash of the spirit Kun and revive the sect, Fan Lingxiao takes his existing spirit pets and embarks on a new adventure with Gu Ling, Cheng Xi, and Yue Tong.

(Source: Bilibili)

Note: The first episode has a runtime of 36 minutes.