When school started, Fang Xiaoyu originally wanted to choose an F-level white bear, but Liu Ruyan took the initiative to exchange it with him for a white fox with pure blood. It turns out that both of them are reborn. When the extreme cold apocalypse came in the last life, Liu Ruyan's white fox froze to death due to its long growth period, while Fang Xiaoyu's white bear shared the talent of keeping cold. In this life, Fang Xiaoyu accidentally concluded a blood contract with the white fox, and the white bear was also reborn. When it concluded the contract with Liu Ruyan, it quietly changed the equal contract to a master-servant contract (white bear is the main one).
