Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 17 - 17-12. Changing World

Yuchi traveled to the wild and ferocious world, where the heroes of all races lived in the world, and was arranged to be put in prison by others since he was born.

When others have completely forgotten this little transparent thing, he has already taken out the bamboo pole that accompanied him in his previous life.

There are souls of ancient gods and beasts in the vast wilderness of the world, rivers and seas.

This bamboo pole can communicate with ancient times.

Go fishing in the Nether Dead Sea and get the Lament of the Naga Siren!

Fishing in the Bone Ning River, get the onslaught of Mourning Murlocs!

Go fishing in the cave sky and deep pool, and get the golden pupil of the five-clawed dragon!

Hang candles in the sea and sky to fish, and get the real fire of the nine-tailed white fox!

Tens of thousands of years have passed in a flash, and gods and beasts from all walks of life come to congratulate them on their wedding banquet.

A certain giant couldn’t help asking: “Why are you so scary?”

Yuchi looked at the beautiful wife beside him, and in his mind he recalled the scene where he once stood standing in the dark sea and fought thousands of evil spirits…

Smiled: “Without him, it’s just luck.”

- Description from novelbuddy

A man found himself mysteriously reincarnated into the universe of Against the Gods.The good news: He was conscious from the moment he was a sperm.The bad news: His parents died when he was born and he was left in the wilderness to die.The good news: He was saved and adopted by the Medical Saint, Yun Gu.The bad news: His master was killed by some villains who wanted to steal the Sky Poison Pearl.The good news: His genius is almost frightening!

Others treated disease to save person, he treated disease to steal heart.

The Frost Goddess was deeply captivated by him. The gentle and kind beautiful teacher was completely enchanted by him. Even the cold and beautiful female assassin melted quietly because of him.

Competing in medical skills? He was the one who treated the Godly Doctor. Competing with backgrounds? Leaders rushed to him. What? You actually wanted to compete with him in a match for match? Looking at the gentle girl beside him, Tang Yu had a headache as he said, “Beautiful girl, how did you fall in love with me?”

- Description from Novelupdates

It has been more than ten years since he was transported to another world. The protagonist Deris Fahrenheit, who has became a magician with special circumstances, was freely enjoying his life in this world. However, a girl appeared before him and asked him to make her his disciple. That girl seems to be a transported person――

It’s a story of him who becomes the girl’s teacher and trains her to achieve her revenge (?) in otherworld.