Yu - Gi - Oh ! 5D ' s - Ride 003 " Lord of the Underworld ! ! " is third chapter of the " Yu - Gi - Oh ! 5D ' s " manga . This chapter was first printed October 21 , 2009 in the 12 / 2009 issue of the " V - Jump " magazine . It was later reprinted in the American " Shonen Jump " magazine , and in volume 1 of the . Summary . Skeleton Knight ' s turn . Yusei is right in front of the Skeleton Knight with 3200 Life Points , while the knight has 2300 . Yusei has " Mighty Warrior " on his side of the field . The knight has " Hellfire Sleeping Beauty , Ghost Sleeper " and is just after playing " Ghost Fusion " . Yusei vows to win the Duel for Sect . The Skeleton Knight thanks Yusei for the pain and in return he shall show him some of his power . " Ghost Fusion " activates and fuses " Hellfire Sleeping Beauty , Ghost Sleeper " with the " Hellfire Dragon , Ghost Wyvern " in is Deck . The two monsters are dragged into a vortex . The souls are calling the master of the Underworld , the knight explains . A new creature emerges by breaking a hole in the dark . The monster , " Underworld Dragon Dragonecro " , is Summoned to the Skeleton Knight ' s side of the field in Attack Position with 3000 ATK . Yusei is surprised to see such a massive creature and the entrance it made . The Skeleton Knight starts his Battle Phase . He has " Underworld Dragon Dragonecro " attack " Mighty Warrior " . " Dragonecro " takes a bite from " Mighty Warrior " and pulls out a blackened version of the same monster . Yusei ' s Duel Runner starts to swerve and his Life Points lower to 2400 . The blackened " Mighty Warrior " now stands on the Skeleton Knight ' s side of the field . The knight explains that " Dragonecro ' s " effect allows him to steal the souls of monsters it battles . The Skeleton Knight now controls " " , which has the same ATK as " Mighty Warrior " and 0 DEF . The original " Mighty Warrior " still stands on Yusei ' s side of the field , stripped of its soul , causing its ATK to lower to 0 . " Mighty Warrior : Dark Soul " attacks " Mighty Warrior " using its " Mighty Dark Knuckle " attack . Yusei coughs blood , as his he takes 2200 damage , lowering his Life Points to 200 . The " Dark Soul " counterparts are unable to destroy monsters by battle , so " Mighty Warrior " remains on Yusei ' s field . Yusei struggles to stay conscious as he comes close of a wall of fire . He starts to wonder if he can even beat a monster with such a Dark Feel . Meanwhile over on the alter , Sect starts to barely move and says Yusei ' s name . Standing himself up , he stats that he doesn ' t believe his rival Yusei will be defeated here and that he shall be the only duelist to defeat Yusei . He screams out Yusei ' s name , causing Yusei to quickly regain control of himself and pull clear of the fire . Yusei activates his face - down card " Shock Draw " , allowing him to draw 1 card for each increment of 1000 damage he took last turn . He draws 3 cards and convinces himself that the monster he ' s up against can be defeated and refuses to lose the Duel . Yusei ' s turn . Yusei begins his turn . As he draws , Sect makes the same hand movements . They both close their eyes and touch their arms , where Yusei has his Deck fastened . Imagining Sect behind him in the same position , Yusei draws his next card ; " Righty Driver " . Yusei Summons " Righty Driver " . Seeing a Tuner monster , the knight worries about what ' s about to happen . Yusei tunes " Righty Driver " with " Mighty Warrior " and Synchro Summon s " Lightning Warrior " . Yusei orders " Lightning Warrior " to destroy the fake soul turned dark . Using its " Lightning Punisher " attack , " Lightning Warrior " attack s and destroy s " Mighty Warrior : Dark Soul " . The Skeleton Knight ' s Life Points drop to 2100 . " Lightning Warrior ' s " effect " Lightning Ray " then activates , inflicting 400 damage to the knight for every card in his hand . " Lightning Warrior " blasts the knight , taking away 1600 more Life Points , leaving him at 500 . ( " Lightning Warrior ' s " effect is different in the manga . In real life the monster must be sent to the Graveyard for " Lightning Warrior " to inflict the effect damage , while in the manga the monster only needs to be destroy ed . " " is not a card , so it did not go to the Graveyard . In the manga , it inflicts 400 damage per card , rather than 300 ) . Yusei and the Skeleton Knight are now side - by - side . Yusei Set s 2 cards in his Spell & Trap Card Zone . The knight laughs that this interesting that Yusei could push him this hard . Skeleton Knight ' s turn . The Skeleton Knight starts his turn and leaps up to higher ground . Yusei notices him speeding up and vows not to let him get ahead and speeds up . The knight commands " Dragonecro " to steal a new soul . The dragon starts to close in on " Lightning Warrior " . Sect screams out Yusei ' s name , while the knight hopes that this should finish Yusei . Featured Duel : Yusei Fudo vs . Skeleton Knight . " Duel continues from the previous Ride . " The Skeleton Knight activates " Ghost Fusion " , send ing the " Hellfire Sleeping Beauty , Ghost Sleeper " on his field and a " Hellfire Dragon , Ghost Wyvern " from his Deck to the Graveyard to Fusion Summon " Underworld Dragon Dragonecro " ( 3000 / 0 ) in Attack Position . " Underworld Dragon Dragonecro " attack s " Mighty Warrior " , but doesn ' t destroy it due to its own effect ( Yusei : 3200 → 2400 ) . The other effect of " Dragonecro " Special Summon s " " ( 2200 / 2000 ) to the Skeleton Kight ' s side of the field and reduces the ATK " Mighty Warrior " to 0 . " Mighty Warrior ' s " Dark Soul " attacks " Mighty Warrior " , but doesn ' t destroy it due to its own effect ( Yusei : 2400 → 200 ) . Yusei activates his face - down " Shock Draw " , drawing 3 cards as he took 3000 points of damage this turn . Turn 5 : Yusei Yusei draws and Normal Summon s " Righty Driver " ( 100 / 300 ) . He then tunes the Level 1 " Righty Driver " and the Level 6 " Mighty Warrior " to Synchro Summon " Lightning Warrior " ( 2400 / 1200 ) in Attack Position . " Lightning Warrior " attacks and destroys " Mighty Warrior ' s " Dark Soul ( Skeleton Knight : 2300 → 2100 ) . The effect of " Lightning Warrior " activates , inflicting 1600 damage to the Skeleton Knight as he has 4 cards in his hand ( Skeleton Knight : 2100 → 500 ) . Yusei Set s 2 cards . Turn 6 : Skeleton Knight " Underworld Dragon Dragonecro " attacks " Lightning Warrior " . " Duel continues in the next Ride . "