<Li> "To the Other Side of the Wall" (壁 の 向こう 側 へ, Kabe no Mukōgawa e) </Li> <Tr> <Td_colspan="5"> After Zeke's betrayal, his parents and the rest of the revolutionaries were taken to Paradis Island, where the walls are situated, and Grisha was forced to watch Dina and the others being transformed into Titans and sent away, but was saved by Eren Kruger, an undercover agent known as "Owl", who used his Titan Shifting powers to kill all the Marley forces . After revealing that he received his powers thirteen years before, and will soon die because of them, Kruger passes them over to Grisha by having Grisha transform into a Titan and then eat him . Upon looking at Grisha's memories inside his mind, Eren discovers not only that he has less than a decade left to live, but that the Titan who killed his mother was actually Dina . Meanwhile, Historia receives a letter from Ymir, who reveals that she will soon be killed, and thanks Historia for having at least lived with her for a while . After disclosing all the info obtained from Grisha's documents to the public, the new government commands the effort to clear and reclaim Wall Maria from the Titans . However, Eren realizes that he only managed to use the power of the Coordinate when he was in contact with Dina, a member of the royal family turned titan, and, fearing for Historia's safety, decides to keep that information to himself . </Td> </Tr> <Tr> <Th> 23 </Th> <Td> August 9, 2017 </Td> <Td> ISBN 978 - 4 - 06510 - 100 - 1 ISBN 978 - 4 - 06510 - 007 - 3 (limited edition) </Td> <Td> December 19, 2017 </Td> <Td> ISBN 978 - 1 - 63236 - 463 - 0 </Td> </Tr> <Tr> <Td_colspan="5"> <Table> <Tr> <Td> <Ol> <Li> "The Other Side of the Ocean" (海 の 向こう 側, Umi no Mukōgawa) </Li> <Li> "Marley's Soldiers" (マーレ の 戦士, Māre no Senshi) </Li> <Li> "Midnight Train" (闇夜 の 列車, Yamiyo no Ressha) </Li> <Li> "The Boy Inside The Wall" (壁 の 中 の 少年, Kabe no Naka no Shōnen) </Li> </Ol> </Td> </Tr> </Table> </Td> </Tr>

When do new issues of attack on titan come out