Request: AU!Painter!Roy/Riza.
Roy paints many things: people and places, reality or fantasy, anything they ask of him; and they come from all over to see his work, these strangers. They admire his work and he accepts their empty praise for work that they think is done for their pleasure when it's not— it's for his memories and for Riza (even though she's moved on by now, married happily with children), for the dream they'd once shared that he continues painting.
And he knows deep inside that no matter how old he was or what shape the finished piece took, he was still just a twelve year old boy painting flowers for Riza on a rainy summer evening.