In This Life I Became a Coach - Chapter 1: The Crash

He’s in the deepest part of Jianghu.

Keep your eyes wide open.

If you do not wish to get dragged into the abyss.

[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...

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Deek has never had success with the ladies. He’s poor, overweight, and generally unliked. Feeling like a burden on his mother, with his life going nowhere, he spends his days playing video games. However, when a mysterious game ends up in his bag, he is teleported to another world. The only way for a talentless slob like him to get by is to venture into dangerous dungeons for fame and money. Regrettably, Deek always preferred to play support roles, and in this case he picked White Mage. In a world with slavery, where he can purchase beautiful and powerful women as his allies, this might actually work.

Tags: Isekai, Slice-of-life, RPG, Weak-Protagonist, Comedy, Harem, Large-Harem, Slavery, Romance, Animalgirls, Monstergirls, Dungeons, Drama, Erotica, Growing-protagonist