I Became a Ruined Character in a Dark Fantasy - Chapter 276

Ling Xiao was a powerful martial expert who fell in battle and was unexpectedly transmigrated into another world. He began life anew in the body of a boy with the same name, a fallen genius of the Ling Family whose cultivation had been crippled in a surprise attack, and son to a father who had also suspiciously been crippled under similar circumstances. Armed with knowledge from his previous life, Ling Xiao aim to restore his strength and establish his place at the top of this new world

- Description from Novelupdates

[Propose to Liliana Draven and get rejected.][Success: Gain the All Affinity Crystal and God-Level Talent.][Failure: Lose the system and receive… a handkerchief to wipe your tears]Veer braced himself for rejection, but to his shock, she actually said yes![Ding! Task failed][But a hidden mission has been completed. System upgrading...][Would you like to merge with the Wife Doting System?]_______________________Labeled as a joke for his “useless” Dragon Master Aspect, Veer never expected dragons to take him seriously—or for the School Belle to form a contract with him.And what? she’s an Ice Dragon? And her sister, the Dark Dragon, wants to be tamed too?Veer’s life just turned into pure chaos, and it’s only getting crazier!......

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

The young lord of a small and weak country saves a dragon beside the sea one day.