Gustafa

It depends on how many hearts he has

1heart: the first heart event happens when you walk from the farm lot and if gustafa was playing his guitar then this may happen choose all the positive answers. this happens in spring or later.

2hearts:walk in his yurt and you will see him pacing back in forth wondering what to do same as last time do all positive answers.this is in summer.
Now 3hearts and four hearts can be done in fall.

3hearts: walk out of the house and gustafa will be there to the side say all the positive answers and he'll ask if you would walk with him say yes and after that say all positive answers do positve answers for four too. he'll give a flower after the walk and sing another part of the song. In fall.

4hearts: Walk out of the inn and you will see gustafa walk into the bar you will follow him once pick all the positive answers and he'll play the last part of the song.

Positive answers for the events:

First heart answers:
Sure
Yeah it is
Listen

second heart event answers:
Yes
Yes
Yes

Third heart event answers:
Sure
Yes I do
Yes

Fourth heart event answers:
Sure
Think of something

After the events and he's at four a event may happen when you first wake up the next morning that the harvest sprites will tell you they have blue feather to propose to the person you like best they will give it to the Takakura or someting like that will come tell you something. When you get don't get to excited because gustsafa won't except right then. Give him a few days and he will except then when you propose he will stay in his Yurt until the first day of spring your house will be bigger and then you have a kid.