Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 1 - 1-2. Written Dream Read as Ephemeral

Cheng Yan transmigrated only to end up in a medieval Europe like world, becoming Roland, a Royal Prince. But this world doesn’t seem to be the same as his former world, despite some similarities. Witches are real and they actually can use magic?

Follow Roland’s battle for the throne against his siblings. Will he be able to win, even though the king already declared him to be a hopeless case and with the worst starting situation? With his knowledge of modern technologies and the help of the witches, who are known as devils’ servants and are hunted by the the Holy Church, he might have a fighting chance.

Now, let his journey begin.

Ryutaro, an ordinary high school student, was suddenly summoned to another world by a mysterious magic circle in his room. Upon arrival, he was greeted by King Albert of the Celestia Kingdom, who declared him a hero destined to defeat the Demon King. However, when Ryutaro checked his status, he was shocked to discover that his assigned job was not a warrior or mage, but… a Farmer.Deemed a failure, Ryutaro was cast away to Black Forest, a place where unfit heroes were abandoned and where the Demon Queen was imprisoned. Just as he was about to despair, a system notification revealed the existence of a Legendary Hoe, a mythical farming tool with extraordinary abilities. Determined to prove his worth, Ryutaro embarks on a journey to master his newfound power and show the world that even a farmer can become a hero.But deep within the forest, an unknown figure watches his every move… Who is this mysterious person, and what awaits Ryutaro in this new world?

Always looked down upon by others, Ji Feng gains technology far more advanced than the present, as he discovers its abilities, he begins to walk a path far from ordinary. With X-ray vision allowing his to find jade stones in rocks. With this futuristic technology, Ji Feng accomplishes something no-one can compare to. This is the beginning of a legend.

- Description from Novelupdates

Liam feels increasingly suffocated by debt, paralyzing shyness, and the monotony of everyday life. However, everything falls apart when he is falsely accused of a crime and is on the verge of being expelled from university. But as he's wandering hopelessly back home, a strange voice echoes in his head, informing him that he has received the “Harem App.”Suddenly, his life is turned upside down, and he now has supernatural powers to win over beautiful women. At the same time, he finds himself entangled in conflicts far beyond those of a mere human.