Black Gold Saw over 8 years ago Rinnosuke works well with every Touhou girl. Although Sakuya and Rinnosuke does make my heart doki doki as well.
grand zero over 8 years ago Silver Hair. <- My only reasonable guess, yet I like the pairing oddly enough (since there's a good chance that Sakuya is actually older than Rinnosuke, assuming the Vampire Hunter legend is true [no proof, but it's cool]).