Devil to Healer

"Wanna sign a contract with me to become that destined one?" Devil Jekaterina is summoned and saved by a cultivator girl Yuchi Yue. To Yue surprise, the first thing Jekaterina wants to do when she wakes up is to ask her sign a contract with her with a kiss? "Kissing on the lips is the thing that can only be done between those who likes each...