Toukairin sees a boy who has just quit Kendo.  He takes him under his wing in order to help him out.  After a series of seemingly unrelated training exercises, the Kendo training is back in session.  This time the boy beats the girl who embarrassed him before and has his confidence back - and the respect of the girl as well.  When Natsumi asks Toukairin why he did all this, he just tells her it was for personal reasons.