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

The big guy dresses up as a lonely and old male supporting character, slaps his face and abuses scumbags to fall in love.
small world:
A scumbag male supporting actor who is lonely and old: learning to love with both hands.
The tyrant male supporting role who left the inheritance to the heroine’s son: the family has the throne to inherit.
The deposed prince: what kind of emperor, when the emperor!
Bingshan ex-husband of a book girl: It is impossible to chase after a wife.
The prince of the enemy country who retreated for the heroine: step on the capital and rule the world.
The pet girl mad demon of the group pet text: I pet myself.
Edible Guide: Quickly cross the routine, capitalize the romance! One cp in one world, if you change the world, your feelings will be eliminated. If you don’t like it, don’t enter. 

Content tags: face slap
Search keywords: Protagonist: Dongchen ┃ Supporting role: My concluding article “The Male Protagonist Doesn’t Follow the Plot [Quick Pass]” “Someone Wants to Take My Gold Finger [Quick Pass]” ┃Others:

- Description from novelbuddy

The chronicle of a swotter reincarnated as a muscle brain, aspiring to be a magician!Synopsis——I, who had always longed for the world of sword and magic, found myself reincarnated into another world. But wait, why the hell was the new world just as academically focused as the last.……Whatever, what matter was I was in the world of magic.Reincarnated I was, I strived to live like the wind, free and whimsical while working hard for the elite course but a shocking twist was awaiting for me—What, I don’t have a talent for magic? I only have the talent for Body-Strengthening magic (musclebrain)?No, Impossible, absurd! I am obviously from the sage clique!No matter what, I will not be bound to the competitive society in this life! With unwavering determination, I set out on a quest to discover how I could become a mage at the prestigious academy in the royal capital. But little did I know, my talent in Body-Strengthening magic was a double-edged sword, leading to misunderstandings and an ever-escalating series of mishaps……However my will is unshaken! I will absolutely live the way I want in this life!

“I can’t do it anymore. Stop it…I can’t take it anymore!” The second young master stopped in his tracks and raised his brows as he stared at Miss Jiang. “All you had to do was jog, so—”

〔Congratulations, for mating with a Queen Bee you got a new achievement: ”Not a virgin”! Your reward: “Drone Consort” title.〕‘Hey! I wasn’t a virgin before this, system!’Imagine that you lived a painfully average life, died by a stupid, stupid accident, but a goddess interfered and gave you a second chance in another world.There, you became a consort of a beautiful, big-chested queen, and your only job is to have mind-blowing sex with her so she could have thousands of your adorable daughters. In return, you can live in peace and luxury for the rest of your days.Which means, for about two months. Because I’m a bee. And my queen is also a bee. And bees don’t live for long.The only way to increase my lifespan is to develop my bee colony. A hard task in this huge world filled with dangerous and hungry beasts, other war-hungry insect tribes, and natural disasters.But I have a hundred thousand daughters, some actual brains, and with superior genes given to me by my system, we will be unstoppable!===Note: no NTR, harem, incest, or outright smut.