Raseri's Links
Raseri was very young when he lost his parents, hence why he has always seen Ning Yuqi as his mother. Even after going back and acknowledging his biological family, in his heart, he places her above them.
Ning Yuqi did not really understand family, and the unconditional love and care it brings, until she began raising Raseri. At first she was just curious of his story, but now loves him like her own son.