This is very small but I hope you enjoy it :)
Neville labels each plant he grows in the greenhouse with a small muggle sticky note. Harry knows him to have purchased these through Hermione. As he watches his classmate scoop soil up with bare hands, Harry realizes that he knows a lot of things about Neville.
In the common room, at dusk, Neville once whispered to Harry, "No one sees me."
Harry could not think of a reply. But afterwards, The-Boy-Who-Lived made an extra effort to invite Neville. To laugh with him and watch each expression, lapping it all up because he was terrified. Not that no one noticed Neville. But that Neville didn't notice other's caring for him.
Harry became a shadow, trailing after the other Gryffindor. Ron chalked this up to a misplaced hero complex. But Harry knew otherwise. He simply enjoyed Neville's comfortable silences. The way his smile brightened an entire room and the way that his sweater collection seemed endless. (And it was, Neville had once informed Harry that his grandmother shipped him a new one monthly.)
He enjoyed watching Neville's careful hands tend to the vines and bulbs in the greenhouse. It had become habitual to Harry. Maybe in the way that Neville always lined his potted plants with the sticky note label facing perfectly forward, his cramped writing spelling out, "Rose" and "Clover" and "Dittany."
Rose, Clover, Dittany.
Grey eyes that held immeasurable kindness, hair that become wavy the longer it got, hands always covered with dirt. Harry knew a lot about Neville.
So on the October morning that a large group of boys accidentally run into Neville, knocking his plants to the ground, Harry finally has a response to a repeated, "No one sees me."
And It is with complete conviction that Harry, while holding out a forgotten pot, meets Neville's gaze and answers,
"All I see is you."