Who does Sailor Mercury get married to?

Answer 1

As far as I've seen, she doesn't end up with anyone. At the beginning she liked Darin, but since Serena and Darin were meant for each other she gave up.

Yuuichiro works at Raye (Sailor Mars) temple and falls in love with her and it is understood that he is very wealthy and humble and thats why he works there to build character. It is understood that he wants to marry Raye cuz the girls say it and the grandfather says it too, in the later seasons he confronts haruka (sailor uranus) thinkig shes a guy that likes raye and he fights her and tries to leave the temple and return home but raye goes after him and brings him back to the temple. They stop showing him, naru, umino and other minor characters in the final seasons because those facts are established and accepted. the plot is so complex that they can only cram the current issues at hand. but yes mars ends up with a very nice man.

Answer 2

Aside from Usagi/Sailor Moon, none of the other Sailor Senshi are explicitly shown marrying anyone in either the Sailor Moon anime or manga.

In the anime, Ami had a romantic interest in the Yellow Rainbow Crystal carrier, Ryo Urawa. He only appeared in two episodes during the first season of Sailor Moon, and then never again. However, in the Sailor Moon RPG "Another Story," he appears to inform Ami and other Senshi of a change in Destiny, and is saved by the Inner Senshi. A similar-looking Sprite as him appears in Ami's dream later in the game, as her husband.