Sakura's manga / #Age gap(15)

The vampire population once flourished the country, but they ended up in persecution due to the human uprising. Mikhael is the last surviving vampire, who is eccentric and loves humans. He had been living an eternity in solitude, until he came across a dying child soldier, Johann, and decided to raise him as his own son. For 16 years, Mikhael and Johann travelled the world together and now Johann is all grown up~ Mikhael wants to marry him off, but Johann has a mind of his own…