Chase the dragon
Uke was seme's fiance. Uke is a mixed hybrid werewolf and seme is a dragon. Seme upset that uke ran away and finds him. Locks him up until he agrees to stay with him and let him imprint/become his mate.
Kamisama no Uroko
Seme is dragon god who says uke is his wife. Uke is a writer who finds seme on the ground and helps him. Turns out it was a promise made when uke was a child. Uke needs to decide if he wants to be his bride, must willing to sacrifice himself to show his level of love. Another god ends up hurting uke as well.
I Was Reborn as His Highness the Prince's Little Evil Dragon
Let's Get Rich Quick! Mr. Evil Dragon
@ch 32 Uke is the CEO of his own company and secretly a dragon. Seme is a dragon slayer who wanted to hunt uke so he became his secretary, but upon signing the contract, uke had a secret clause that creates a dragon/knight contract. This means seme can't hurt uke and uke gives him some of the dragon's special powers as exchange. Seme is secretly still finding way to slay uke before the one year that ends the contract. Uke is a very greedy dragon and wants to earn as much money as possible, also need to be able to afford gold since dragons eat gold.
Kamikemono no Hakoniwa