The supporting character's harem is very normal - Chapter 461 Karol Magic Academy.

Xiang Nuan starts to play this game because of a certain famous gamer. Later, however, she finds out that the game is much more interesting than the man…

- Description from Novelupdates

On their wedding night, she gnashed her teeth, yelling, “Your Highness, that’s shameless!”

Set off by the flickering light of red candles, he curved the corner of his mouth into a wicked grin, “Actually, I can be more shameless…”

…

When they met for the first time, he was the young prince who lived in his day of brilliance, while she was the pampered princess of the adjacent state.

When they met again, he became the crippled underdog suffering from frustration, while she became the lackluster hostage stranded in an alien land.

In his mid-life, he was defeated in the fight and had his legs broken; his wife passed away and he didn’t have anything left except his father’s detestation… After constant blows took the edge off his spirit, all he wanted was nothing but serenity.

In her teen-age, her state perished and her home lost; she lapsed into an awkward situation after being abandoned and having her marriage annulled… As endless hardships isolated her from happiness, everything she wished for was no more than peace.

…

“Lu Zhishan, when I first met you, I didn’t think I’d marry you…too old,” after years passed by, one day, she lay on his laps mumbling, with a kind of hazy beauty on her boozy face, “and lame.”

“Mu Nanzhi, you have the wrong memory. At our first meeting, I’m neither old nor limp.”

“…When was that?”

“When people were celebrating your first birthday,” that man assumed all gentleness and joy crept on his eyes and brows, “On that day, you were ‘drawing lots’ in the rear hall. I also sneaked there to have a look. But, out of my expectation, you directly grabbed my true-love knot.”

…

How vivid the red love pea is embedded in the exquisitely carved dice,

Just as my feelings for you deep in my bones.

- Description from Novelupdates

Solver Keter, one of the Five Lunatics of Lawless City, regresses to when he was the illegitimate son of a doomed archery family.“If I regressed and couldn’t even save my family, I might as well go kill myself.”For my family? No, for my freedom!

The protagonist of a war fantasy novel, Theo, competes with his rival and antagonist, Luke, for the position of Supreme Commander. Having been reincarnated into Luke’s role, he struggles to fulfill his duties as the villain. “It seems like principles as a soldier, the duties I should uphold, don’t matter to you at all.” Even if misunderstood by Theo, Luke silently remained faithful to his role as the antagonist. After completing all his duties, Luke successfully gave Theo his happy ending, cast aside his military uniform, and retired from the army. Now, Luke planned to create his own future story without interference from anyone. That was the plan, at least… “Why go this far? I’m no longer a soldier, and if you really think about it, we were never on good terms anyway.” To make matters worse, not only had he unexpectedly reunited with Theo, but now, Theo was persistently and seriously pressing him in a way he hadn’t imagined. “I want to know you better.” It was a completely incomprehensible statement, and it wasn’t even an appropriate answer to the question. The protagonist came to the antagonist and suddenly asked for help, simply because they wanted to know him better?