Spirit Tamer: From the Start, I Contracted an Imprisoned Elf Princess

[Beast Taming + Raising Gorgeous Pets + System + Alternate World + Fantasy + Satisfying Power-Ups] Twenty-five hundred years ago, the Divine Realm became the Divine Tomb. All races fell into misery, and none suffered more than humanity, until the Spirit Tamer profession emerged... Mo Han's soul transmigrates into the age of spiritual energy on Blue Star, but things are impossibly difficult from the start. Just as he's wondering whether to start over, he discovers a gorgeous elf held captive! With the System's help, he successfully forms a master-servant contract with her! Other people's pets only need to be easy on the eyes, but all of mine are gorgeous. Others grow stronger through cultivation, while I get stronger not only by cultivating and fighting, but even by taking advantage of people! Read on to find out more.