Yu - Gi - Oh ! VRAINS - Episode 031 " The Final Trigger " is the thirty - first episode of the " Yu - Gi - Oh ! VRAINS " anime . It first aired in Japan on December 13 , 2017 . It became available with official subtitles via Crunchyroll on the same day . Featured Duel : Ghost Girl vs . Varis . Turn 2 : Varis Varis Normal Summon s " Gateway Dragon " ( 1600 / 1400 ) . He then activates the effect of " Gateway Dragon " to Special Summon a Level 4 or lower DARK Dragon monster from his hand . He Special Summons " Sniffer Dragon " ( 800 / 400 ) . As it was Special Summoned , Varis activates the effect of " Sniffer Dragon " to add another copy of " Sniffer Dragon " from his Deck to his hand . Varis activates the effect of " Defrag Dragon " in his hand , sending another monster from his hand to the GY to Special Summon it . He sends " Background Dragon " to the GY to Special Summon " Defrag Dragon " in Attack Position ( 1000 / 600 ) . Varis uses " Gateway Dragon " and " Sniffer Dragon " to Link Summon " Twin Triangle Dragon " ( 1200 / LINK - 2 / ↓→ ) to the Extra Monster Zone . Varis activates the effect of " Twin Triangle Dragon " , paying 500 LP to Special Summon a Level 5 or higher monster in his GY to a zone it points to , but it cannot attack this turn and has its effects negated ( Varis : 4000 → 3500 LP ) . He Special Summons " Background Dragon " ( 1600 / 1800 ) to the bottom Link Point of " Twin Triangle Dragon " . Varis uses " Twin Triangle Dragon " , " Background Dragon " , and " Defrag Dragon " to Link Summon " Topologic Bomber Dragon " ( 3000 / LINK - 4 / ↑↙↓↘ ) to the Extra Monster Zone . " Topologic Bomber Dragon " attacks " Altergeist Marionetter " ( 1600 / 1700 ) . As Varis ' monster attacked while she controls an " Altergeist " monster , Ghost Girl activates the effect of " Altergeist Kunquery " , Special Summoning it ( 0 / 2400 ) , then negating the attack . As " Kunquery " was Special Summoned , Ghost Girl activates its effect , which lets her negate the effects of a monster Varis controls while " Kunquery " is on the field . She negates the effects of " Topologic Bomber Dragon " . Turn 3 : Ghost Girl Ghost Girl ' s hand contains " Altergeist Silquitous " and " Altergeist Materialization " . Ghost Girl Normal Summons " Altergeist Silquitous " ( 800 / 1500 ) . She activates the her face - down Continuous Trap Card " Altergeist Protocol " . Ghost Girl activates the effect of " Silquitous " , returning an " Altergeist " card she controls to her hand to return a card Varis controls to his hand . She returns " Protocol " to her hand , and returns " Topologic Bomber Dragon " to Varis ' Extra Deck . Ghost Girl uses " Kunquery " and " Silquitous " to Link Summon " Altergeist Kidolga " ( 1000 / LINK - 2 / ←↓ ) to the Extra Monster Zone , then uses " Kidolga " and " Marionetter " to Link Summon " Altergeist Primebanshee " ( 2100 / LINK - 3 / ↓↘→ ) to the Extra Monster Zone . Ghost Girl activates her face - down Trap Card " Altergeist Materialization " to Special Summon an " Altergeist " monster from her GY , and equip " Materialization " to that monster . When " Materialization " leaves the field , that monster is destroyed . She Special Summons " Kidolga " ( 1000 / LINK - 2 / ←↓ ) . Ghost Girl Sets two cards . " Primebanshee " attacks Varis directly ( Varis 3500 → 1400 LP ) . As another " Altergeist " monster inflicted battle damage to Varis , Ghost Girl activates the effect of " Kidolga " , which lets her Special Summon a monster in Varis ' GY to a zone " Kidolga " points to , but it cannot attack unless " Kidolga " attacked that turn . She Special Summons " Twin Triangle Dragon " ( 1200 / LINK - 2 / ↓→ ) to the left Link Point of " Kidolga " . " Kidolga " attacks Varis directly ( Varis : 1400 → 400 LP ) . " Twin Triangle Dragon " attacks Varis directly , but Varis activates an unseen Trap Card which destroys " Kidolga " , " Primebanshee " and " Twin Triangle Dragon " . As " Primebanshee " was sent from the field to the GY , Ghost Girl activates its effect , adding an " Altergeist " card from her GY to her hand . She adds " Marionetter " . Ghost Girl activates her Skill " Secret Cure " , to excavate cards from her Deck , until she excavates a monster . That monster is added to her hand , both players gain LP equal to its ATK , and all other cards are sent to the GY . She excavates " Kunquery " ( 0 / 2400 ) and adds it to her hand . Turn 4 : Varis Ghost Girl activates her face - down Continuous Trap Card " Altergeist Protocol " . " Protocol " prevents the activation and effects of " Altergeist " cards on Ghost Girl ' s field from being negated . When Varis activates a monster effect , Ghost Girl can send another face - up " Altergeist " card on the field to the GY to negate the activation and destroy that monster . As Ghost Girl activated a Trap Card , Varis pays half his LP to activate " Red Reboot " from his hand ( Varis : 400 → 200 LP ) , to negate the activation of that Trap Card and re - Set it , then Ghost Girl can Set a Trap directly from her Deck . " Red Reboot " also prevents Ghost Girl from activating Trap Cards for the rest of the turn . Ghost Girl Sets " Altergeist Camouflage " . As he controls no monsters , Varis activates the effect of " Background Dragon " in his GY to Special Summon itself and a Level 4 or lower Dragon monster from his hand in Defense Position , but " Background Dragon " is banished when it leaves the field . He Special Summons it ( 1600 / 1800 ) and " Sniffer Dragon " ( 800 / 400 ) . As " Sniffer Dragon " was Special Summoned , Varis activates its effect to add another copy of " Sniffer Dragon " from his Deck to his hand , which he subsequently Normal Summons ( 800 / 400 ) . At this point , Varis enters the Data Storm . Varis activates his Skill " Storm Access " , which allows him to randomly access a card from a Data Storm when his LP is 1000 or less . Varis obtains " Topologic Trisbaena " and adds it to his Extra Deck . Varis uses " Background Dragon " and both copies of " Sniffer Dragon " to Link Summon " Topologic Trisbaena " ( 2500 / LINK - 3 / ↙↑↘ ) to the Extra Monster Zone . Varis activates the effect of " Defrag Dragon " in his GY , banishing three other monsters with the same name from his GY to Special Summon it . He banishes three copies of " Sniffer Dragon " and Special Summons " Defrag Dragon " in Defense Position ( 1000 / 600 ) to the bottom - left Link Point of " Topologic Trisbaena " . As a monster was Special Summoned to a zone " Topologic Trisbaena " points to , its effect activates , banishing that monster and all Spells / Traps on the field , then inflicting 500 damage to Ghost Girl for each of Ghost Girl ' s cards banished by this effect ( Ghost Girl : 4000 → 2500 LP ) . " Topologic Trisbaena " attacks Ghost Girl directly ( Ghost Girl : 2500 → 0 LP ) . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .