Curate, connect, and discover
Ginny, the twins, and Ron don't confide in Percy like the other siblings at Hogwarts. Percy feels useless as a big brother and not needed, so once more reminds them that he's always in the library if they change their minds. While Percy's working on an assignment at his normal spot, light shuffling steps stop right before him. Percy's head is buried in a book and he's half paying attention when a small first year asks him for help. The boy confesses that he overheard Percy tell his family he was always available for help, and he thought since he doesn't have any siblings or friends he could ask Percy for help.
Percy agreed reluctantly not realizing he immediately said yes to someone who's not a Weasley sibling. At the end when they finished the first year Gryffindor is appreciative and more confident, rushing off with a big smile.
A couple days later Percy's at the table when he hears something, perking his head up there are now a few first years with pleading eyes. He waves them over and bright smiles shine back at him.
A week later Percy lifts his eyes above his book and he sees he's surrounded by a small crowd of children, ranging in houses and eager for his guidance. There are some Slytherins who show up to the session Percy leads shy and excited. At a certain point the first years bring homemade cookies (requested by children from parents), knitted/crochet items, and drawings of him/random things to gift him for allowing them to hang out with Percy.