MTL - Shoujo Grand Summoning - ~ 1999 ended... let everything turn into memories...

The two faced number one female spy transmigrates to a different world and becomes an outrageous idiot girl. When she woke up, what she had to face was consecutive blows of the decline of her family clan, her crippled martial skills, and her disfiguration. To protect her family, she must obtain the treasured book, obtain outstanding achievements, summon a dark beast army. Wait and see how in this unfamiliar, dark magical continent, she dies and becomes a demon then steps up to the top, making all of the formidable people in the world bow down to her in respect.

- Description from Novelupdates

The challenges a female cultivator had to overcome on her life journey were countless.

She mustn’t be lacking in talent, cultivation techniques, medicinal pills, and magic weapons. Otherwise, her cultivation would progress too slowly.

She also mustn’t have too many emotions, weaknesses, kindness, and greed. If she had too much of them, she would soon be saying hello with death.

Moreover, she must look neither too pretty nor too ugly. Although she mustn’t be stupid, she also couldn’t be too intelligent.

Being a female cultivator, Mo Tiange naturally had to face those challenges. Nevertheless, being orphaned from a young age had toughened her tenacity and resilience. Neither having what were deemed as waste spiritual roots nor limited resources could deter her spirit. Staying as inconspicuous as possible but never let an opportunity go was her daily life. Follow Mo Tiange as she embarked on a journey to survive and achieve immortality in the harsh and merciless cultivation world…

- Description from Novelupdates

Zorian is a teenage mage of humble birth and slightly above-average skill, attending his third year of education at Cyoria’s magical academy.

He is a driven and irritable young man, consumed by a desire to ensure his own future and free himself of the influence of his family, whom he resents for favoring his brothers over him. Consequently, he has no time for pointless distractions or paying attention to other people’s problems.

As it happens, time is something he is about to get plenty of. On the eve of the Cyoria’s annual summer festival, he is killed and brought back to the beginning of the month, just before he was about to take a train to Cyoria.

Suddenly trapped in a time loop with no clear end or exit, Zorian will have to look both within and without to unravel the mystery before him. And he does have to unravel it, for the time loop hadn’t been made for his sake and dangers lurk everywhere…

Repetition is the mother of learning, but Zorian will have to first make sure he survives to try again — in a world of magic, even a time traveler isn’t safe from those who wish him ill.

Dual cultivation isn't a choice; it's a necessity.

After being struck by a truck like most lucky protagonists (or unlucky ones), Vaan found himself transmigrated into the body of an orphan in the world of witches and demons.

However, they didn't always exist.

Demons terrorized the world ever since the Gehenna Realm descended over 300 years ago. but along with them, came mana, giving birth to witches to combat these demons.

Since then, the world of men was dominated by witches, establishing the seven witch kingdoms, which safeguards at the forefront of the demon invasion.

In order to survive in the matriarchal society of the witch kingdoms, Vaan, like all other men who cannot use magic, had to learn how to service the witches to survive.

Nevertheless, it did not come without its own benefits.

Years of research have led the world to the discovery of intimacy between men and women could increase the witches' mana absorption.

But at the same time, men could absorb some of this mana to improve their physique and lifespan.

Thus, since then, an intricate relationship was formed between men and witches in the red-light districts. Love became casual, and dual cultivation is common.

As a prodigy in the art of pleasing women, Vaan lived a smooth two years since his transmigration as an orphan.

However, everything came crashing down in a heartbeat one day when his life was nearly taken, and Lady Eniwse whom he served went berserk.

Even so, that was not the end.

With the awakening of the Witch Hunter System, watch how Vaan takes on the world and becomes the lord of witches.

=====
Note: Contains lemons.
Hunting witches does not necessarily imply killing witches if you know what I mean ( ͡° ͜ʖ ͡°)