AmiShingo

AmixShingo is a het ship between Ami Mizuno (aka Sailor Mercury) and Shingo Tsukino in the Sailor Moon series.

Canon
In Sailor Moon SuperS episode 17, Shingo has a crush on Ami. They go out on a inflatable boat together. Tiger's Eye attacks throwing Shingo into the ocean. Ami dives in and saves him and give him mouth-to-moth resuscitation.

Later when Tiger's Eye attacks Ami, Shingo tries to defend her.

Fanon
It is a less common pairing shince it was only featured in one episode of the classic anime, which would be Shingo's last appearance.