Yandere Apprentices All Want to Push Me Over

In order to survive his trial of calamity, the crafty old master Ji Baitai should have slept for ten years. But he woke up early, and his female apprentices who were vying to "sleep with him" have disappeared. When he found them again, there's the sexy demon, seductive catgirl, cute loli, haughty swordswoman, and gorgeous twins all over him, trying to get into his pants! And then he found out another shocking secret, he can only choose one between immortality and women!

(Source: Kuaikan, translated)