Atelier Rorona: The Alchemist of Arland

To unlock this trophy, you must have your Friendship Level at 100 for all of the following characters:

• Iksel (Sunrise Cafe)
• Hagel (Beefy Weapons Shop)
• Tiffani (R&T Sundries Store)
• Cordelia (Town Square, in front of the statue)
• Sterk (Palace Hallway)
• Lionela (Industrial District, all the way to the right, hiding in a corner)
• Gio (Main Street, further down to the left past your house)
• Tantris (Town Square, to the left of Cordelia)
• Cole(Industrial District, by Lionela near the barrels)
• Pamela (Pamela's Store)

As I've mentioned, Friend Requests gets replaced every 4 days. It is best to reach 100% with each character as soon as they're available. The longer you hold off in doing this, the harder it becomes to fulfill their requests. Their requests will start off simple, and gradually become harder and harder with each assignment. Also, if there's a recipe that becomes unlocked, they'll start asking you for it despite the fact you don't have access to the materials yet.

A simple trick to get around all this is to save on the third day before a character's request. Progress towards the fourth day, and check up on the character you're trying to complete the request with. If they ask for something that takes a long time to make or out of your league, reload your previous save. In addition, when making items, check the days it requires to make the item. If it takes the same amount of days to make x1 or x2 of the item, make x2. You can put it in your container and bring it back out if they request it again.

Doing this to each character, and you should easily reach 100% with all of them before the end of Year 2, earning you the trophy.