A Handbook for Keeping Earthlings

At the end of the world, a world-famous musical genius transmigrates to Earth three thousand years in the future, after it has been destroyed. As the last ancient human, he is lucky enough to escape being imprisoned and experimented on by aliens, but through a twist of fate, he is sold by a crooked merchant as an X-slave. Yet his bad luck does not end there. When he wakes up again, he discovers that, absurdly, he has become another man's "wife"... He thinks he must have crossed paths with the God of Misfortune. Why does he keep running into that barbaric man who is, in name, his "husband"? One is as hard as iron, the other as unyielding as stone. Who will emerge as the ultimate victor in this battle of conquest? And how will he achieve his musical dreams on an alien planet in this future world? PS: Apart from cooking, this seme can handle any occasion, any battlefield, and especially the bedroom. A strong uke who occasionally loses his temper. A male-male romance after marriage, a strong couple matched one-on-one, no kids, HE. Also featuring two ambiguous supporting semes, but this is not a harem~~ It has every kind of melodrama, with both major and minor landmines. [Other stories by Xuan] Once, there was a wonderful story right in front of me, but I didn't leave a comment. Later... it got abandoned T^T... This heartbreaking tale teaches us to leave more comments and lurk less, and never to be one of those readers who waits for a story to build up chapters before reading. Theme: