create alias tachibana_sugune -> tachibana_sugane
The tag was probably taken from ANN, which has him incorrectly listed as Sugune. It's clearly Sugane in the show, and Wikipedia agrees: http://ja.wikipedia.org/wiki/%E3%82%AC%E3%83%83%E3%83%81%E3%83%A3%E3%83%9E%E3%83%B3_%E3%82%AF%E3%83%A9%E3%82%A6%E3%82%BA