The Silver Heart Has No Horn

The little bottom, hailed as the fire department's "Venus of Queensland," accepts a special mission to assist archaeologists. Deep underground, he discovers Joel, who has been sleeping as a puppet for a thousand years. Then he is press-ganged and thrown into another world a thousand years in the past, where he must assassinate the silver-starred demon dragon who will overturn the entire world. Unfortunately, he discovers that the time transfer was off by a century. When he arrives, the supposedly great political leader in his early years, and super-scheming overlord demon king later on, is still a debauched lecher, drinking his life away in a tavern and living off handouts thanks to his good looks.

After entering that world, the little bottom follows the clue Joel gave him: "The target has a star-shaped mark below his abdomen." He has no choice but to accept Yin Xin's flirtatious invitation for drinks (and sex), nearly gets raped, and confirms the man's identity in the process. Only after noticing the differences between the two worlds does he realize how difficult this assassination mission will be. In the end, all he can do is stay hidden by this future demon king's side and look for the perfect moment to strike a fatal blow...

To his utter surprise, this mighty-looking dragon claims to know every kind of magic, but can't use a single one properly. In the end, the little bottom has to go rescue him. The two flee in a sorry state and gradually grow closer. The human somehow becomes Yin Xin's "big brother," and can only laugh and cry as he starts thinking about how to fundamentally help this silly dragon defy fate and prevent tragedy from happening...