MTL - Marvel: I Am the Man of Steel! - Chapter 500

In a world where dungeons were an essential part of it, Rein was trying to conquer as many as possible. They were the key to gain powers in the fastest possible way. So, to reach his full potential and to become the strongest, he became a great dungeon conqueror.With his trusty friends and lovers, he was definitely going to reach the peak alongside everyone. Join Rein and see how he went from strong to stronger and then the strongest.__________________1. The harem would not be too large(I'm not sure how many but probably just 4-5 main and few other here and there). All the girls would be getting their time and story.2. The story is starting when the MC is in the middle of his growth stage and not at the very beginning. But his beginning will be mentioned in the story in some form.3. I don't think I need to mention this, but obviously it will not have any NTR, rape or that kind of stuff. It is actually quite a wholesome story focusing mainly on adventure, action and bit of romance and slice of life.

Liu Fang, a manager, died suddenly at work due to being too diligent.
She thought that she would turn into a wisp of dust and dissipate after her death, but she never imagined that – the new century, the new underworld, even if she became a soul, she would still be a worker!

Liu Fang has become a newcomer to the underworld Quick transmigration Department. In order to wait for a good reincarnation, she strived to accumulate merit and traveled into one world after another to repair the way of heaven.

- Description from Novelupdates

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again. 

Getting betrayed, stabbed, and dumped in a monster nest wasn’t how Jemil expected to die.Turns out, the universe had other plans.When he awakens the forbidden Eros Beast System, Jemil gains the ability to tame—and evolve—beast girls through intimacy. The stronger their bond, the more powerful (and seductive) they become.Now stuck with a dangerously clingy fox spirit, a seductive plant nymph who wants “healing time” every night, an ice-cold phoenix valkyrie with serious tsundere energy, and a yandere snake woman who keeps coiling around his bedroll, Jemil’s survival is no longer about fighting monsters.It’s about surviving his own harem.Every beast wants his affection. Every touch unlocks new power. Every battle pushes their bonds further.And if he lets his guard down?They might just evolve…Into something that’ll kill for him.Or ride him into the next life.[Warning: Contains beast girls, spicy bonding, absurd system quests, dangerous waifus, and one very overwhelmed tamer.]