Staying in the Yandere Demon Gate Seeking Immortality!

I accidentally traveled to a demonic realm where demons are everywhere and human lives are like grass. In order to seek immortality and survive, Lu Ze chose to join the Demon Sect without hesitation! What's strange is that my own Demon Sect has no sect leader and elders, only a few demon senior sisters who are notorious for killing! But the senior sisters were kind-hearted and spoke sweetly. They cared for him when he was most dangerous and helpless, and invited him to join the sect to practice. How could there be any hint of the devilish behavior rumored by the outside world? "This must be a rumor from the outside world!" "What everyone hates is not the devil, but their inability to become the devil." "And I was born to be a devil!" "Hey, senior sisters, wait for me! Huh? Wait! What do you want to do?!!!" A few days after joining the sect, Lu Ze suddenly discovered that things were not as simple as he imagined. Several senior sisters all had secrets and were worthy of being female devils! And the reason why he was able to join the sect and be valued by several senior sisters was because...