Keiichi Maebara has made lots of great friends since moving to Hinamizawa- namely one Satoko Hojo, who's practically a little sister to him now. When he finds out about her lessthan- stellar home life, he's determined to help Satoko find her happily ever after! But with the Cotton Drifting Festival in less than a week, Keiichi wonders whether the Satoko he knows will even last until then, or if she will simply drift away like the cotton in the stream...