The supporting character's harem is very normal - Chapter 236 Welcome home

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Even after knowing what came next....I still accepted.A deal with the devil herself.A devil, in the form of a goddess.I accepted a life that I knew wouldn't end well, a life that was worse off than the very curel one I already lived.But I still choose to do it.I chose to become the villain.

Zhao Yesui runs a private custom shop, and his job is to customize death for others.

On a certain day of a certain year, when he customized an exclusive death for a customer as always, he found himself involved in a game of death with no end in sight.

What surprised Zhao Yeshi even more was that, unlike other players, he seemed to be able to extract identities in the game?

However, as he extracted more and more identities, trouble also followed.

The NPCs in the game… chased after him in reality.

Not only that, but many of his identities are also known to everyone by word of mouth.

Such as Legendary Investigator, Unthinking Juggernaut, Archon of Fantasy Kingdom, Lord of Steam, Weaver of Fate, Loving Father, Lord of Death and Soul, etc.

And those women with prestigious titles also followed, the queen of the fantasy country, the ruling angel who called herself a bad woman, the immortal of Shenzhou who inherited the precious blood…

In this regard, Zhao Yejia could only deny it righteously, and packed up and ran away to escape the end of his own blood.

- Description from novelbuddy

Reincarnated as the eldest son of Ming Taizu Zhu Yuanzhang, the biological father of Emperor Jianwen, and the elder brother of Ming Chengzu Zhu Di.

See how Yiwen Prince Zhu Biao, who was fleeting like a meteor in history, survived the turbulent Hongwu years and built a new Ming Dynasty!

(No system, no plug-ins, no IQ crushing, no cross-age technology tree)

- Description from novelbuddy