Lackey's Seducing Survival Odyssey - Chapter 17: An Eternal slave shall....

She was drugged by her ex-boyfriend and had her first night with a mysterious man.

Alexander was the greatest tyrant in history. His cruel, brutal and vicious reign struck fear in his enemies and allies alike. But that all ended when he was betrayed by his own people and beheaded by his archrival. As Alexander’s consciousness faded away all he could think of is all the faults he made, how he could have avoided them, how unlucky he had been, and his wrath and unwillingness to die at the hands of the man he hated most! But unexpectedly he was given not only the answers to these questions, but also a second chance to right all his many wrongs.

[You have just awakened your first dragon: SSS-Rank Fire Dragon.]Drahon was born with dragon-like horns, and because of that, his parents abandoned him at an orphanage. Mocked, bullied, and branded a freak, he never knew where he truly belonged.Until one day, while serving punishment, he stumbled upon a mysterious egg...A dragon egg that opened a portal and led him into The Dragon Game.[You have summoned an SSS-Rank Demon wrymling.][You have evolved your SSS-Rank Primordial Frost Dragon into a Multi Fire-Frost Dragon.][Upgrading Fire-Frost Dragon Roar ×10...]Bond with dragons and summon them in battle? Of course. All Ranked 'SSS'Draconic skills? Master them.Monster bosses? Shatter them.Half-dragon, half-monster abominations? Burn them.Mandatory roleplaying? Absolutely. Rule kingdoms, command medieval armies, and go to war.Enemies? They’re just EXP.And just after Level One, he uncovers the shocking truth behind the game’s existence...And discovers the reason for his horns: he’s half dragon, and that grants him the ability to transform into a half dragon, half human form.[You have just slain a cerberus-class half-dragon monster.][Absorbing essence...]And now?He’ll be more than the horned freak they abandoned —He’ll become Dragon Lord.[A/N: It gets much better after level one]

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.