Not in Vain

The Crippled General Lu Ji X Substitude Bride Merman, Yu Xiaoman

My name is Yu Xiaoman. My surname, "Yu", comes from Yujia Village, the place where you saved me; My given name is from the solar term of the day you saved me seven years ago, and also the day we first met. This is the story of Yu Xiaoman, the little merman who wanted to repay his savior's kindness and offered himself as a substitute bride in his marriage.

(Source: Bilibili Comics)