Why is this a requirement for marriage when only some Eligible Girls/Bachelors live by themselves? The reason is that, once you marry the individual, he/she will come to live with you in your Farmhouse.

In the case of any Eligible Girl/Bachelor, it is only those who have their own houses or businesses that will give this Sun Stone to you. This is the Sun Stone that is given as 'owner' of a house or business. There is another Sun Stone, in many cases, that you can receive from a Character as well.

This little Event can occur anywhere on the Map when you speak to the individual after having given five Gifts that have been received 'with music'. One is given after the player has given give 'Favourite' items as gifts. Where Characters in Sunshine Islands are concerned, there are two different types of Sun Stone Gifts. There is an added requirement for marriage in Sunshine Islands that is related to Sun Stones. A number of players were a little bewildered when, having experienced all Heart Events for an Eligible Girl/Bachelor and having met all other ordinary requirements for marriage, the individual, at deepest red heart, would refuse the player's Proposal and Blue Feather.

Sunshine islands dialogue