I regressed and became the Sword Ice King - Chapter 430- Festival 161- The Sun Comet 10

Xiao Ze, who was dedicated to the people and vowed to become a generation of Ming Jun, accidentally fell on a little lady.
The little lady was born beautiful and lovable.
So Xiao Ze accepted his life and got the name of fear.

ps:
①The male protagonist has no concubine, and he is dedicated to serving the country.

- Description from novelbuddy

In the vast and boundless continent Cangtu, there were ancient sects governing the Ten Old Domains, unworldly immortal clans beyond the Blue Sky, and primordial demon gods dominating the dark abyss that together created a great number of brilliant stories over the long course of the history.

In this very world, there was a boy, named Lin Xun, who embarked on his journey to the pinnacle of strength alone through cultivation and spiritual tattoo inscribing.

Escaping alone from the Mine Prison where he had been living since he was adopted by Master Lu, Lin Xun knew nothing about his identity but the little information his adopter, Master Lu, had told him. With two ancient spiritual tools Master Lu gave to him before the destruction of the Mine Prison, Lin Xun started his journey to Ziyao Empire, where he is supposed to find out the truth of his lost Spiritual Vessel and the person who slaughtered his family, leaving him orphaned.

Will he be able to unlock the mysteries of the two magic treasures, unveil the secrets of his identity and create a legend of his own?

- Description from Novelupdates

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

At the Edge of the Void…A soft blue light hums, pulsing with energy, its robotic voice ringing with purpose.> “Do you accept me, System 0404, the Harem-Building System?”A young man in his twenties, eyes shining with excitement, eagerly responds:> “YES!”The blue light flares—The universe shifts—The binding process begins—DING!> [System Successfully Bound to…]…Daphne Han???????***System: “If you’re going to RUIN the harem-building mission, I’m not helping you!”Daphne: “Okay, I’ll just win without you.”System: “…Wait, what?”***World one:Male Lead: “Why are my offers disappearing?!”Daphne: “Oh? Maybe you just weren’t talented enough.”System: “YOU CAN’T JUST DELETE THE PROTAGONIST!”Actress #1: “Wait, I actually love acting, not this forced romance subplot?”Actress #2: “Oh wow, working under Daphne is way better than chasing ML’s validation.”Male Lead: “WHERE DID MY HAREM GO?!”System: “DON'T RUIN THE PLOT!”Villainess: “What do you want in return for everything?”Daphne: “You.”System: “NOOOO, SHE’S SUPPOSED TO BE HIS FINAL LOVE INTEREST!”World two:Emperor: “You were supposed to compete for my favor!”Daphne: “Nah. I’m the one with favor now.”Heroine: “Can I join your court instead?”System: “THAT'S NOT HOW HAREM DRAMAS WORK!”***CEO: “I was supposed to be her fate!”Demon Lord: “SHE WAS SUPPOSED TO REDEEM ME!”Imperial Prince: “What do you MEAN she’s not interested in me anymore?!”System: “THIS IS NOT HOW THESE STORIES WORK.”