In the Hehuan Sect: the Senior Sisters All Use Me as a Furnace

[Chasing the master and rebelling against the disciples + system + villain + multiple female protagonists + cruelty + murder and treasure grabbing] Shen Lang, who had been a slave in the Hehuan Sect for two and a half years, had a complete mental breakdown and took the initiative to go to the cave of the senior sister Bai Yueyi to seek death. At this time, the system finally woke up. Shen Lang was mistaken by the senior sister for being the Innate Furnace Cauldron Holy Body, so Shen Lang was let go and promoted to an outer disciple. But the eldest sister is not only severely schizophrenic, she is even a yandere...