take it to the river, the first box when you start to travel and hand it over to her, remember to take it back!
once you can leave the village, there are different areas, the river you need to go to is the first area, hand the basket over and leave the area once you finish the h scene, back in the village the twin tails girl will ask you to bring it back, so return to the same area and get the basket and return
you can explore, the same guard has a quest to that unlocks a H scene, you need three slime balls and three feather that you get from defending the enemys outside, you can find the sheep gals and shear them if you got the shear or you can fight the druid and free the gal there (warning the druid is hard so don't mind if you lose a few times) or you can gather the clothes and talk to the girl who asks you to get them and take it to the river, return to village and girl who was sleeping is awake and she asks you to get the basket back, you can talk to the Fisher gal and she asks you to get one of each fish so the first two areas are fishing spots and just keep fishing till you got 4 different kinds, the girl by the pot in the village asks you to gather 3 flowers and you can find those easy
you only need 3 coins to challenge the chief, so I found that during the "fight" if you increase your speed and max out once you start climaxing to hold down the Z Key, you can empreg her in one shot, it's kinda hard to get down the rhythm for it but once you figure it out, the fight is easy
fighting the chief finishs the game so you move into the Chiefs house, if you only gave her the three you can have fun getting the rest and you can walk around with your loincloth off and you can turn in the coins in the store? next to the merchant girl and get different outfits and stuff to change the gals, to change them you go to the dresser in the Chiefs house (now yours)