The dragon's harem - Chapter 2 A Dragon’s City Debut.

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.

The scum’s or villain’s long road of transformation was tentatively set to the world:
The abandonment of the educated youth’s wife (Completed)
The hidden marriage of the scum film emperor (Completed)
The best brother in the world (Completed)
The Phoenix male who destroy the bridge after crossing the river (Completed)
The treasonous general (Completed)
I’m an honest man (Completed)
To become the top scorer in the School of Agriculture (Completed)
The soft rice man’s self-cultivation (Completed)
The whole world is reborn (Completed)
I want to survive on a desert island (Completed)
The stallion male who has seized the opportunity (Completed)
The perverted self-salvation (Completed)
The spring of the loafer (Completed)
The misplaced life (Completed)
The miser career (Completed)
The ghost is out of feeling (Completed)
The Queen’s favorite husband (Completed)
The vicious girl with her godfather (Completed)
I want to be a good person (Completed)
I does not tear up the family (Completed)
The perverted common plant (Completed)
The Mary Sue’s men (Completed)
Every time I was reborn, someone wants to kill me (Completed)
The old people’s counterattack path (Completed)
The global evolution (Completed)
When I became a net red (Completed)
For you, good person (Completed)
His heart had white moonlight (Completed)

- Description from Novelupdates

Author : Kinugasa ShougoIllustrator : TomoseshunsakuAs Ayanokouji and his classmates begin their second year at the Advanced Nurturing High School, they're greeted by a fresh gauntlet of exams and a fresh batch of rather unique first-year students. They'll have to get to know each other quickly, because the first special exam pairs the first-years with the second-years on a written test--with only the second-years facing expulsion if their team performs poorly! Worse yet? It seems one of the new first-years is also from the White Room. Can Ayanokouji avoid expulsion while sussing out the identity of this hidden foe?

In the land of the Xia Kingdom, every human being is born with what is known as a ‘resonance’, either to a specific element or a powerful, mythical beast. Unfortunately, Li Luo was born with an incredibly rare condition known as a blank resonance – as the name suggests, he doesn’t have one! Normally, this would be utterly crippling, but at least he has the advantage of being the young master of the mighty House Loulan, one of the five Great Houses of Xia. Unfortunately, his parents, the powerful masters of House Loulan, have gone missing for many years, and the other Great Houses are beginning to eye their holdings quite hungrily. For that matter, plenty are also eyeing his talented, beautiful childhood friend and fiancee Jiang Qing’e, who has been leading House Loulan in his parents’ stead! Li Luo would much rather keep a low profile and wants to call off the engagement – but Jiang Qing’e has flatly refused. What’s a ‘useless young master’ to do?