A Reincarnated Mage's Tower Dungeon Management - Volume 4, Chapter 5 – The Dungeon’s Treasure Guardian

Shu Yu transmigrated and became the original novel’s violent and brutal female Demon that caused the supporting male character, AKA hidden Boss, to become batsh*t crazy. However, right now, the Boss is just a lowly slave that was just given to her. What should she do?

- Description from Novelupdates

She is the underworld Ghost Doctor’s only disciple, who accidentally transmigrated into the body of the main wife’s daughter in the general’s mansion. She used to be a punching bag.Now, she stepped on her dregs of an older sister, put her father’s concubine in her place, and teaches any objectionable aristocratic ladies a lesson.

Dear comrades, masters, priests, masters, fairies, demons, and leaders, welcome to my world and enjoy the supreme pleasure and supreme enjoyment brought by traveling through various worlds (funny laugh).

- Description from novelbuddy

Lu Xun was beheading demons and exterminating evil, not knowing what a worthy opponent was. On that day, Lu Xun found himself defenseless as he was beaten by a powerful female demon, unable to fight back, and was forced into marriage with a young demoness.“A real man should not dwell under the influence of demons for too long!”With impassioned words, Lu Xun successfully married into the demon clan. The young demoness was a 400-year-old golden snake, cold as ice, and arrogant. The powerful female demon was a thousand-year-old white snake, mature and charming, with captivating beauty. The little female demon was a 200-year-old fox, mischievous and adorable, full of liveliness.“Something’s not right!”“These female demons are not normal!”However, Lu Xun gradually discovered that not only were these female demons suspicious, but there were even more peculiar things happening outside!