Unlock the following trophies in the basement of your house by performing the corresponding tasks:

TROPHY - HOW TO UNLOCK
First Date Memory - Go to the location of your first date.
First Catch Memory - Catch your first fish.
Memory of your first pet - Tame any monster.
The Big Feast! - Win the Big Feast Festival on Fall 5th.
All Friends - Earn the friendship and love with all characters
Game Clear! - Watch the ending credits.
Memory of 10000000 Gold - Get a total of 10000000 Gold in your inventory.
Level 100! - Reach level 100.
Memory of Sialance Maze - Clear the Sialance Maze in the basement of your house.
All Items! - Obtain every item found in Rune Factory 3.
Memories of 5 Years - Reach to the 5th year of game time. 

Marry a girl, then save the game. Load the saved game. The Sharance Tree will be in bloom, a singer will be performing the song, and new scenes will appear during the opening sequence.

The following people prefer the corresponding items:

PERSON - ITEM
Blaise - Sweets and chocolate.
Carlos - Fish.
Carmen - Fish.
Collette - Rice dishes.
Evelyn - Cloth and other clothing material.
Gaius - Any ore, especially gold.
Hazel - Vegetables.
Karina - Gems, but hates diamonds.
Marian - Green vegetables.
Marjorie - Colored grass.
Pia - Squid, apples, and oranges.
Raven - Flowers and ore.
Rusk - Sweets and chocolate.
Sakuya - Monster trophies and sashimi.
Sherman - Cooked items.
Shino - Mushrooms.
Sofia - Weeds.
Wells - Rice balls.