<Table> <Tr> <Th> No . </Th> <Th> Arc No . </Th> <Th> Title </Th> <Th> Original airdate </Th> <Th> English airdate </Th> </Tr> <Tr> <Th> 27 </Th> <Td> </Td> <Td> `` Arrival × At × The Arena '' `` Tōgijō ni Tōjō '' ( トウギジョウ × ニ × トウジョウ ) </Td> <Td> April 15 , 2012 </Td> <Td> November 12 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> Gon and Killua have arrived at Heavens Arena , where opponents get stronger as you ascend the tower , to train and make money . Both of them are immediately advanced to the 50th floor after their initial battles on the 1st floor . There , they meet Zushi , another young teen with amazing strength . When Killua faces off against Zushi , he has no difficulty at all , until Zushi uses a strange technique reminiscent of what Illumi used . Killua is frightened enough to back away , but Zushi 's martial arts master , Wing , instructs him to stop the technique . Killua and Gon continue winning fights until they reach the 100th floor . The pair decide to ask Zushi about his strange technique ( called `` Ren '' ) , but Wing warns them against it . Killua insists he knew because Ren is related to the secret behind his brother 's power . In the end , Killua agrees to study under Wing . </Td> </Tr> <Tr> <Th> 28 </Th> <Td> </Td> <Td> `` Nen × And × `` Nen '' '' `` Nen to Nen '' ( ネン × ト × ネン ) </Td> <Td> April 22 , 2012 </Td> <Td> November 19 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> In Wing 's room , Gon , Killua and Zushi are being taught by Wing . He explains the 4 main principles : Ten , Ren , Zetsu and Hatsu . He demonstrates how Ren works , by giving Killua the idea of killing him . Because of the strong pressure , Killua is forced to back off . Wing advises them to train with Zushi and start mastering Ten but Killua suggests that they should leave . Killua reveals to Gon that Wing was lying all along as his teachings do n't explain Zushi 's extreme resilience he noticed while fighting him . Zushi is troubled because Wing lied to them . Wing only says that for them to know the other meaning of Nen is dangerous . After clearing the 190th floor , Gon and Killua advance to the 200th floor . They are stopped by a strong aura which makes them both wary . An employee appears , stating that they should register before midnight . Hisoka appears out of nowhere , and warns them that they are not ready yet and he wo n't let them pass . Wing appears behind them and offers to teach them the real Nen . Before leaving , the employee also informs Killua that if he ca n't register at the given time , he will never be admitted as he already failed to register for the 200th floor once as a kid . In Wing 's room , he finally teaches Gon and Killua the real Nen . </Td> </Tr> <Tr> <Th> 29 </Th> <Td> </Td> <Td> `` Awakening × And × Potential '' `` Kakusei to Kanōsei '' ( カクセイ × ト × カノウセイ ) </Td> <Td> April 29 , 2012 </Td> <Td> November 26 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> Gon and Killua 's aura nodes finally open thanks to Wing 's help . He teaches them how to pass through Hisoka 's barrier of Nen . A few hours before midnight , Gon and Killua come back to the hallway that Hisoka is guarding . They successfully pass through and Gon challenges Hisoka to a fight . Hisoka only replies that if Gon manages to win even one match , Hisoka will accept his challenge . The two successfully register before time runs out . After registering , they are confronted by three fighters from the 200th floor , namely Gido , Sadaso , and Riehlvelt . The two leave and head towards their room . A message saying that Gon 's match will be on the next day is seen on the television . The next day , Gido and Gon face off in the arena . Gido launches his spinning tops he called Battle Waltz . Gon is left defenseless in the middle of the ring . </Td> </Tr> <Tr> <Th> 30 </Th> <Td> </Td> <Td> `` Fierce × And × Ferocious '' `` Gekitō to Kattō '' ( ゲキトウ × ト × カットウ ) </Td> <Td> May 6 , 2012 </Td> <Td> December 3 , 2016
<Table> <Tr> <Th> No . </Th> <Th> Arc No . </Th> <Th> Title </Th> <Th> Original airdate </Th> <Th> English airdate </Th> </Tr> <Tr> <Th> 27 </Th> <Td> </Td> <Td> `` Arrival × At × The Arena '' `` Tōgijō ni Tōjō '' ( トウギジョウ × ニ × トウジョウ ) </Td> <Td> April 15 , 2012 </Td> <Td> November 12 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> Gon and Killua have arrived at Heavens Arena , where opponents get stronger as you ascend the tower , to train and make money . Both of them are immediately advanced to the 50th floor after their initial battles on the 1st floor . There , they meet Zushi , another young teen with amazing strength . When Killua faces off against Zushi , he has no difficulty at all , until Zushi uses a strange technique reminiscent of what Illumi used . Killua is frightened enough to back away , but Zushi 's martial arts master , Wing , instructs him to stop the technique . Killua and Gon continue winning fights until they reach the 100th floor . The pair decide to ask Zushi about his strange technique ( called `` Ren '' ) , but Wing warns them against it . Killua insists he knew because Ren is related to the secret behind his brother 's power . In the end , Killua agrees to study under Wing . </Td> </Tr> <Tr> <Th> 28 </Th> <Td> </Td> <Td> `` Nen × And × `` Nen '' '' `` Nen to Nen '' ( ネン × ト × ネン ) </Td> <Td> April 22 , 2012 </Td> <Td> November 19 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> In Wing 's room , Gon , Killua and Zushi are being taught by Wing . He explains the 4 main principles : Ten , Ren , Zetsu and Hatsu . He demonstrates how Ren works , by giving Killua the idea of killing him . Because of the strong pressure , Killua is forced to back off . Wing advises them to train with Zushi and start mastering Ten but Killua suggests that they should leave . Killua reveals to Gon that Wing was lying all along as his teachings do n't explain Zushi 's extreme resilience he noticed while fighting him . Zushi is troubled because Wing lied to them . Wing only says that for them to know the other meaning of Nen is dangerous . After clearing the 190th floor , Gon and Killua advance to the 200th floor . They are stopped by a strong aura which makes them both wary . An employee appears , stating that they should register before midnight . Hisoka appears out of nowhere , and warns them that they are not ready yet and he wo n't let them pass . Wing appears behind them and offers to teach them the real Nen . Before leaving , the employee also informs Killua that if he ca n't register at the given time , he will never be admitted as he already failed to register for the 200th floor once as a kid . In Wing 's room , he finally teaches Gon and Killua the real Nen . </Td> </Tr> <Tr> <Th> 29 </Th> <Td> </Td> <Td> `` Awakening × And × Potential '' `` Kakusei to Kanōsei '' ( カクセイ × ト × カノウセイ ) </Td> <Td> April 29 , 2012 </Td> <Td> November 26 , 2016 </Td> </Tr> <Tr> <Td colspan="5"> Gon and Killua 's aura nodes finally open thanks to Wing 's help . He teaches them how to pass through Hisoka 's barrier of Nen . A few hours before midnight , Gon and Killua come back to the hallway that Hisoka is guarding . They successfully pass through and Gon challenges Hisoka to a fight . Hisoka only replies that if Gon manages to win even one match , Hisoka will accept his challenge . The two successfully register before time runs out . After registering , they are confronted by three fighters from the 200th floor , namely Gido , Sadaso , and Riehlvelt . The two leave and head towards their room . A message saying that Gon 's match will be on the next day is seen on the television . The next day , Gido and Gon face off in the arena . Gido launches his spinning tops he called Battle Waltz . Gon is left defenseless in the middle of the ring . </Td> </Tr> <Tr> <Th> 30 </Th> <Td> </Td> <Td> `` Fierce × And × Ferocious '' `` Gekitō to Kattō '' ( ゲキトウ × ト × カットウ ) </Td> <Td> May 6 , 2012 </Td> <Td> December 3 , 2016
when is nen introduced in hunter x hunter
when is nen introduced in hunter x hunter
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