Harvest Moon 3 GBC

Harvest Moon 3 GBC takes place on an explorable island. The female protag offers to manage and save her father's farm, and the mayor calls in the male protag (from the previous game) to help her. Gender is important as the male farmer manages crops, and the female farmer manages livestock. Whichever gender the player doesn't pick lives and works with them as an NPC. The player can only marry the other farmer and doing so ends the female player's game but not the male's, who can have kids.