This MC Is Kickass - Chapter 338-339

[Dazzling Beauty × Aloof Tycoon] [His Deliberate Plan]That night, abandoned by the man she had loved for ten years, she was deeply saddened and sought solace in alcohol, but accidentally drank the drugged liquor. Then, he appeared. With a lazy posture and a relaxed tone, he asked, “How about being with me?” He was a big shot feared by all and stood atop the pyramid of society. She knew he was a handful, yet she was still somewhat captivated by him. Thus, she agreed, “Fine.”From then on, it became widely known that he had taken a woman under his wing, doting on her excessively and granting her every wish. Some were jealous and said, “How long can he spoil her? They're just acting and will break up soon.” In fact, she thought the same, so she never dared to fall in love and awaited the day when she would be cast aside. Later, when rumors of a new companion in his life reached her ears, she prepared to leave, but he refused, saying, “You are the only one I have loved all along.”Little did she know, he had loved her for ten years...

Kanda Kyoichi transmigrated to Konoha and became a temporary instructor at the Ninja Academy. Fortunately, he awakened the Mentor System.By teaching others, he could earn rewards.Thus began Kyoichi’s career as a “teacher” in the ninja world.Shisui: “Sensei’s unique interpretation of the Will of Fire has given the Uchiha Clan a true sense of direction!”Asuma: “The essence of the jade lies in protecting the people, with the advanced leading the way for the less experienced. Only then can Konoha become stronger!”Kakashi: “He’s my life mentor. He transformed Konoha!”...Years later, in the memoirs of Kyoichi, now the Hokage, he wrote:“I honestly just wanted to be a life mentor!”

The protagonist, having degenerated into a “loser” after being unable to find employment, gets caught up in someone else’s attempt to commit suicide-by-train and ends up traveling to another world. The numerous cheat powers he demands from God are all granted to him. But contrary to expectations, these powers bring about disastrous consequences for the protagonist.

Having reincarnated into another world, the optimistic protagonist (Yuuri) starts his(her) heart-warming training days with his(her) teacher.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates