"The Genius of Hard Work…!!" (努力の天才…!!, Doryoku no Tensai…!!) is chapter 84 of the original Naruto manga.
With Lee's movements being slowed after using the Front Lotus, Gaara attacks him. Watching Lee at Gaara's mercy, Guy thinks back on Lee's childhood and how, despite his horrid ninjutsu and genjutsu skills, Lee dreamed of being a splendid ninja. Guy encouraged him to put his determination to good use in mastering taijutsu. Having succeeded in this goal, Lee suddenly dodges Gaara's attacks.