Pinnacle of Hard Work.jpg|Ryoma using Hyakku Ren Jitoku no Kiwami Hyakku Ren Jitoku no Kiwami in action.jpg|Tezuka using Hyakku Ren Jitoku no Kiwami. Muga no Kyouchi.jpg|Tezuka using Pinnacle of Hard Work One of the 3 doors beyond Muga no Kyōchi. Traditionally, the user concentrates Muga's explosive power into one arm. Shots are returned with their power and spin doubled while Muga's stamina draining side effects are reduced. Because the Muga's aura is focused into the arm, the rest of the player's body consequently suffer from decreased reactions. First used by Tezuka Kunimitsu in Genius 270.