Spamalot's manga / #Dragons(1)

2 arcs ❥ black dragon - hundreds of years after getting killed by villagers along with his human lover, he's reincarnated as a human and now i highschool is looking for his lover's reincarnation ❥ white dragon - he made a deal with the reincarnation of his lover (who kept dying on him for 1400 years already) to have sexual relations with him in exchange for paying for his lover's sister's medical bills.