Yu - Gi - Oh ! 5D ' s - Ride 049 " Northern Corridor Fury ! ! " , known as " Raging Stream ! The Northern - Sky Corridor ! ! " in the Japanese version , is the forty - ninth chapter of the " Yu - Gi - Oh ! 5D ' s " manga This chapter was first printed August 21 , 2013 in the 10 / 2013 issue of the " V - Jump " magazine . Summary . " Seven Swords Warrior " destroys " Underworld Dragon Dragonecro " with " Seven Swords Slash , " reducing the Skeleton Knight to 2900 Life Points . The Knight is shocked by the Sense , as well as the fact that Yusei actually destroyed his Duel Dragon . Yusei speeds ahead , his own Life Points at 2600 , and once again he experiences a ringing and a vision . He sees Rex Goodwin , whose eyes are dark with Shadow Miasma , stabbing a dark - skinned man and woman , and the man caressing the woman ' s face . The vision ends , and Yusei wonders whether it ' s the Skeleton Knight ' s memory , and who the man and woman that he saw were . The Skeleton Knight admits that Yusei has grown . He defeated " Dragonecro " without flinching at the Knight ' s miasma . Before , Yusei bluffed , acting brave , and his Sense holds strong conviction now . He wonders if Yusei ' s thoughts for his friend drew it out of him . The Knight muses that Yusei is reaching out to reclaim what he ' s lost , and the Knight does likewise , thinking of his brother and the woman that Yusei saw . Even in that , he sees that humans are able to overcome their own limits . Deciding that that ' s enough games , he begins his turn and draws , then Summons a Tuner monster , " Hellfire Boat Guard Ghost Charon " . He reminds Yusei that he ' d told him previously that " Dragonecro " was only a fraction of his power , explaining that " Ghost Charon " allows the Knight to perform a Synchro Summon with a DARK monster in his Graveyard , and subsequently tunes the Level 8 " Dragonecro " with the Level 2 " Ghost Charon " . He chants " Roll back the tide of the dead and emerge from the river of grief that flows through the underworld ! Synchro Summon ! Underworld Flood Dragon Dragocutos ! " He tells Yusei to witness the full extent of his power and Yusei grits his teeth at the sight of a Duel Dragon with 4000 ATK . The Skeleton Knight orders " Dragocutos " to attack " Seven Swords Warrior , " and the Duel Dragon blasts the Warrior away with " Ghost Stream , " reducing Yusei to 2000 Life Points . He asks if Yusei remembers the pain of Shadow Sense , and Yusei claims that it ' s not enough to slow him down . The Knight replies that he ' d have it no other way and activates the effect of " Dragocutos , " allowing it to attack again since it destroyed a monster . The Knight and his Duel Horse glow dark , and the Knight tells Yusei to rot away on the onslaught of his Ebony Dark Howling . Refusing to let that happen , Yusei activates a Trap Card , " Flash Tune , " which activates when a Synchro Monster is destroyed . It allows Yusei to Synchro Summon using a Tuner monster in his hand and the destroyed Synchro Monster . Declaring that " the soul of a warrior is handed down across space and time , " Yusei tunes " Seven Swords Warrior " with the " Righty Driver " in his hand . He chants , " Flash of light which splits the sea of stars ! Shake our souls and roar through the world ! " The Skeleton Knight muses that the Priest ' s Duel Dragon is coming , as Yusei Synchro Summons " Stardust Spark Dragon " . The Knight observes that Yusei has set up a defense for his Life Points , and he orders " Dragocutos " to destroy " Stardust " . Yusei responds with " Stardust ' s " effect to protect itself from destruction , and " Stardust " shields itself within its " Sonic Barrier " from the " Ghost Stream " attack . Yusei ' s Life Points take a hit , falling to 500 and he coughs up blood . The force of the Ebony Dark Howling Sense is nothing like the power that the Knight had displayed previously , and Yusei falls behind . The Knight asks Yusei what ' s wrong , his friend is just over there . Yusei looks up to see a temple , where Sect waits with the Ultimate God . Smiling , Yusei gasps that he ' s almost there , reaching out for Sect and telling him to hold on . He speeds up , catching up with the Skeleton Knight , who ' s impressed by the fact that Yusei made it through . He reveals that " Dragocutos " has another special ability ; at the beginning of his next turn , the Knight will be able to inflict damage equal to the ATK of one of Yusei ' s monsters . And that ' s not all , he also activates a Continuous Spell Card , " Spectral Ice Floe , " which , by excluding a DARK monster from his Graveyard , allows him to protect the cards on his field from Yusei ' s effects . And on top of that , " Dragocutos " can ' t be destroyed in battle . The Skeleton Knight tells Yusei that this is his final turn , and to fight his hardest before he falls . Yusei knows that he ' ll be out of Life Points when the Knight ' s next turn comes . " Dragocutos " is immortal , but unless he can find a way to defeat it , he ' ll lose . Thinking that his destiny rides on this last turn , Yusei declares his turn . Featured Duel : Yusei Fudo vs . Skeleton Knight . " Duel continues from the previous Ride . " Skeleton Knight ' s turn The Skeleton Knight Normal Summon s " Hellfire Boat Guard Ghost Charon " ( 500 / 0 ) , whose effect allows the Skeleton Knight to Synchro Summon a Synchro Monster using itself and a DARK monster in his Graveyard as the Synchro Material s . The Skeleton Knight tunes " Ghost Charon " with " Underworld Dragon Dragonecro " in his Graveyard to Synchro Summon " Underworld Flood Dragon Dragocutos " ( 4000 / 2000 ) in Attack Position . The Skeleton Knight attack s and destroy s Yusei ' s " Seven Swords Warrior " with " Dragocytos " ( Yusei 2600 → 2000 ) . Since " Dragocytos " destroyed a monster by battle , its effects allows itself to attack a second time in a row , but Yusei activates his face - down " Flash Tune " , tuning his destroyed " Seven Swords Warrior " and " Righty Driver " from his hand to Synchro Summon " Stardust Spark Dragon " ( 2500 / 2000 ) in Attack Position . " Dragocytos " attacks " Stardust " , with Yusei preventing the latter ' s destruction via its own effect ( Yusei 2000 → 500 ) . The Skeleton Knight activates " Spectral Ice Floe " , which allows him to banish a DARK monster form his Graveyard in order to protect all of his other cards from card effects . " Duel continues in the next Ride . " Featured cards . The following cards appeared in this chapter . Cards in italic debuted here .