How to increase the intimacy of magic beast in demon domain?

The ways to increase the intimacy of the magic beast in the demon domain are: magic can improve the intimacy; You can use Cinderella's tears to quickly improve your baby's intimacy, and use 1 bottle to improve your intimacy by 50 points, which can be obtained by buying magic stone shops and magic iron shops. Syndra's tears should be used when the intimate relationship is not full, otherwise it will waste resources.