Circle of Friends Trophy

As the story progresses, you will unlock the ability to give gifts to many named officers after you speak them. Each officer has a favourite "type" of gift (and some a specific gift) that boosts their friendship level significantly higher than non-favourite items.

Once you offer an officer enough gifts to fill the bar, you will max their Friendship Level (you can tell by cherry blossom petals flowing out of their head once the bar gets filled). Once this is done with 10 officers, the trophy should pop: the first time you should be able get 10 maxed friends is Chapter 3. Once you finish the story, you will have a giant list of officers you can summon at the Tea House that you can easily just throw gifts at to max.