MTL - Court Marriage - Chapter 2 bitter medicine

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

Leon a young man with the heart of a killer, did something unspeakable before getting transmigrated to another world.And what's more? He found out that due to a wish of his, he got transmigrated to the body of an incubus!And he got into the body at the worst possible time!Something happened, he managed to escape death and became the last of his race...he gained the Vice and Valor System,Lewd and immoral act could give Vice point while battle and bravery can give him Valor Point...This world has magic and beauties that none in his previous life can compare.Join the exciting journey of our MC as he gains immense strength and conquers the most gorgeous girls!

Konominato Aoi, who had been learning Kendo at her family’s dojo since childhood, had a dream of becoming the best in Japan in Kendo, as her father wished. However, that dream didn’t come true. Disheartened by the failure of her student dreams, Aoi became a high school teacher with a new dream: to make her own students the best in Japan in Kendo.Facing numerous challenges and feeling pessimistic, Aoi lost consciousness on the spot and found herself transported to a different world. The one who helped the now-younger Aoi was Owen Millers, an elven mage. Out of curiosity, Owen decided to impart his magical knowledge and research results to Aoi. Inheriting Owen’s skills and knowledge, Aoi became a mage and, under Owen’s guidance, became a teacher at the world-renowned magical academy.However, the academy was filled with the entanglements of aristocratic society, discrimination based on magical power, and individuals exploiting noble students. Aoi found herself dealing with various situations as she navigated through these challenges. This is the story of Aoi Konominato, a female teacher later known as the strongest archmage and the witch of the academy.